Merge branch 'move-basilisk'

118 files changed, 0 insertions, 4245 deletions

diff --git a/browser/themes/linux/Info.png b/browser/themes/linux/Info.png
deleted file mode 100644
index d14479852..000000000
--- a/browser/themes/linux/Info.png
+++ /dev/null
diff --git a/browser/themes/linux/Privacy-16.png b/browser/themes/linux/Privacy-16.png
deleted file mode 100644
index 013cdc4b9..000000000
--- a/browser/themes/linux/Privacy-16.png
+++ /dev/null
diff --git a/browser/themes/linux/Security-broken.png b/browser/themes/linux/Security-broken.png
deleted file mode 100644
index 1ec110be4..000000000
--- a/browser/themes/linux/Security-broken.png
+++ /dev/null
diff --git a/browser/themes/linux/Toolbar-inverted.png b/browser/themes/linux/Toolbar-inverted.png
deleted file mode 100644
index 50a3d346f..000000000
--- a/browser/themes/linux/Toolbar-inverted.png
+++ /dev/null
diff --git a/browser/themes/linux/Toolbar-inverted@2x.png b/browser/themes/linux/Toolbar-inverted@2x.png
deleted file mode 100644
index 3472548d2..000000000
--- a/browser/themes/linux/Toolbar-inverted@2x.png
+++ /dev/null
diff --git a/browser/themes/linux/Toolbar-small.png b/browser/themes/linux/Toolbar-small.png
deleted file mode 100644
index 8f100a54a..000000000
--- a/browser/themes/linux/Toolbar-small.png
+++ /dev/null
diff --git a/browser/themes/linux/Toolbar.png b/browser/themes/linux/Toolbar.png
deleted file mode 100644
index cdd100aa5..000000000
--- a/browser/themes/linux/Toolbar.png
+++ /dev/null
diff --git a/browser/themes/linux/Toolbar@2x.png b/browser/themes/linux/Toolbar@2x.png
deleted file mode 100644
index 3244081c3..000000000
--- a/browser/themes/linux/Toolbar@2x.png
+++ /dev/null
diff --git a/browser/themes/linux/aboutSessionRestore-window-icon.png b/browser/themes/linux/aboutSessionRestore-window-icon.png
deleted file mode 100644
index a99832372..000000000
--- a/browser/themes/linux/aboutSessionRestore-window-icon.png
+++ /dev/null
diff --git a/browser/themes/linux/aboutSyncTabs.css b/browser/themes/linux/aboutSyncTabs.css
deleted file mode 100644
index 4cedad649..000000000
--- a/browser/themes/linux/aboutSyncTabs.css
+++ /dev/null
@@ -1,101 +0,0 @@
-/* This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
-
-#tabs-display,
-#tabsList {
-  background-color: transparent;
-  -moz-appearance: none;
-  margin: 0;
-}
-
-#tabsList {
-  width: 100%;
-}
-
-#tabs-display {
-  background: #fff url(chrome://browser/skin/sync-bg.png) repeat-x center -80px;
-}
-
-#headers {
-  background: url(chrome://browser/skin/sync-32.png) no-repeat;
-  margin-top: 4px;
-  width: 45em;
-  height: 32px;
-  margin-inline-start: 2em;
-  margin-inline-end: 2em;
-}
-
-#tabsListHeading {
-  font-size: 140%;
-  font-weight: bold;
-  margin-inline-start: 40px;
-}
-
-richlistitem {
-  margin-inline-end: 2em;
-}
-
-richlistitem[selected="true"],
-richlistitem:focus {
-  outline-style: none;
-}
-
-richlistitem[type="tab"] {
-  min-height: 3em;
-  border: #999999 1px solid !important;
-  padding: 2px 5px;
-  margin-bottom: 4px;
-  margin-inline-start: 4em;
-  border-radius: 6px;
-  background-color: menu;
-  width: 44em;
-  opacity: 0.9;
-  box-shadow:
-    inset rgba(255, 255, 255, 0.5) 0 1px 0px,
-    inset rgba(0, 0, 0, 0.1) 0 -2px 0px,
-    rgba(0, 0, 0, 0.1) 0px 1px 0px;
-}
-
-richlistitem[type="tab"][selected="true"] {
-  background-color: -moz-MenuHover;
-}
-
-richlistitem[type="client"] {
-  min-height: 2em;
-  color: #000000;
-  margin-inline-start: 2em;
-  margin-top: 2px;
-  margin-bottom: 3px;
-  width: 42em;
-  border-radius: 6px;
-  background-color: transparent;
-  -moz-user-focus: ignore !important;
-}
-richlistitem.mobile[type="client"] {
-  list-style-image: url("chrome://browser/skin/sync-mobileIcon.svg#icon");
-}
-richlistitem.desktop[type="client"] {
-  list-style-image: url("chrome://browser/skin/sync-desktopIcon.svg#icon");
-}
-
-.title,
-.clientName {
-  color: #000000;
-  font-size: 1.1em;
-}
-
-.title[selected="true"],
-.url[selected="true"] {
-  color: inherit;
-}
-
-.url {
-  color: -moz-nativehyperlinktext;
-  font-size: 0.95em;
-}
-
-.tabIcon {
-  padding-inline-start: 2px;
-  padding-top: 2px;
-}
diff --git a/browser/themes/linux/actionicon-tab.png b/browser/themes/linux/actionicon-tab.png
deleted file mode 100644
index 433c25e1a..000000000
--- a/browser/themes/linux/actionicon-tab.png
+++ /dev/null
diff --git a/browser/themes/linux/browser-lightweightTheme.css b/browser/themes/linux/browser-lightweightTheme.css
deleted file mode 100644
index d3109bec3..000000000
--- a/browser/themes/linux/browser-lightweightTheme.css
+++ /dev/null
@@ -1,31 +0,0 @@
-/* This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
-
-%include linuxShared.inc
-%filter substitution
-
-/*
- * LightweightThemeListener will append the current lightweight theme's header
- * image to the background-image for each of the following rulesets.
- */
-
-/* Lightweight theme on tabs */
-#tabbrowser-tabs:not([movingtab]) > .tabbrowser-tab > .tab-stack > .tab-background > .tab-background-start[selected=true]:-moz-lwtheme::before,
-#tabbrowser-tabs:not([movingtab]) > .tabbrowser-tab > .tab-stack > .tab-background > .tab-background-end[selected=true]:-moz-lwtheme::before {
-  background-attachment: scroll, fixed;
-  background-color: transparent;
-  background-image: @fgTabTextureLWT@;/*, lwtHeader;*/
-  background-position: 0 0, right top;
-  background-repeat: repeat-x, no-repeat;
-}
-
-#tabbrowser-tabs:not([movingtab]) > .tabbrowser-tab > .tab-stack > .tab-background > .tab-background-middle[selected=true]:-moz-lwtheme {
-  background-attachment: scroll, scroll, fixed;
-  background-color: transparent;
-  background-image: url(chrome://browser/skin/tabbrowser/tab-active-middle.png),
-                    @fgTabTextureLWT@;/*,
-                    lwtHeader;*/
-  background-position: 0 0, 0 0, right top;
-  background-repeat: repeat-x, repeat-x, no-repeat;
-}
diff --git a/browser/themes/linux/browser.css b/browser/themes/linux/browser.css
deleted file mode 100644
index 534d14834..000000000
--- a/browser/themes/linux/browser.css
+++ /dev/null
@@ -1,1569 +0,0 @@
-%if 0
-/* This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
-%endif
-
-@import url("chrome://global/skin/");
-
-@namespace url("http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul");
-@namespace html url("http://www.w3.org/1999/xhtml");
-@namespace svg url("http://www.w3.org/2000/svg");
-
-%include ../shared/browser.inc
-%include linuxShared.inc
-%filter substitution
-
-%define forwardTransitionLength 150ms
-%define conditionalForwardWithUrlbar window:not([chromehidden~="toolbar"]) #urlbar-wrapper
-
-:root {
-  --backbutton-urlbar-overlap: 6px;
-  /* icon width + border + horizontal padding (without the overlap from backbutton-urlbar-overlap) */
-  --forwardbutton-width: 25px;
-
-  --toolbarbutton-hover-background: rgba(255,255,255,.5) linear-gradient(rgba(255,255,255,.5), transparent);
-  --toolbarbutton-hover-bordercolor: rgba(0,0,0,.25);
-  --toolbarbutton-hover-boxshadow: none;
-
-  --toolbarbutton-active-background: rgba(154,154,154,.5) linear-gradient(rgba(255,255,255,.7), rgba(255,255,255,.4));
-  --toolbarbutton-active-bordercolor: rgba(0,0,0,.3);
-  --toolbarbutton-active-boxshadow: 0 1px 1px rgba(0,0,0,.1) inset, 0 0 1px rgba(0,0,0,.3) inset;
-
-  --toolbarbutton-checkedhover-backgroundcolor: rgba(200,200,200,.5);
-
-  --panel-separator-color: ThreeDShadow;
-  --arrowpanel-dimmed: hsla(0,0%,80%,.3);
-  --arrowpanel-dimmed-further: hsla(0,0%,80%,.45);
-  --arrowpanel-dimmed-even-further: hsla(0,0%,80%,.8);
-
-  --urlbar-separator-color: ThreeDShadow;
-}
-
-#menubar-items {
-  -moz-box-orient: vertical; /* for flex hack */
-}
-
-#main-menubar {
-  -moz-box-flex: 1; /* make menu items expand to fill toolbar height */
-}
-
-#navigator-toolbox {
-  -moz-appearance: none;
-  background-color: transparent;
-  border-top: none;
-}
-
-#navigator-toolbox::after {
-  content: "";
-  display: -moz-box;
-  -moz-box-ordinal-group: 101; /* tabs toolbar is 100 */
-  border-bottom: 1px solid ThreeDShadow;
-}
-
-#navigator-toolbox:-moz-lwtheme::after {
-  border-bottom-color: rgba(0,0,0,.3);
-}
-
-#navigator-toolbox > toolbar:not(#toolbar-menubar):not(#TabsToolbar):not(#addon-bar) {
-  background-image: linear-gradient(@toolbarHighlight@, @toolbarHighlight@);
-}
-
-#navigator-toolbox > toolbar:not(#toolbar-menubar):not(#TabsToolbar):not(#addon-bar):-moz-lwtheme {
-  background-image: linear-gradient(@toolbarHighlightLWT@, @toolbarHighlightLWT@);
-}
-
-#navigator-toolbox > toolbar:not(:-moz-lwtheme):not(#toolbar-menubar):not(#TabsToolbar) {
-  -moz-appearance: none;
-  border-style: none;
-  background-color: -moz-Dialog;
-}
-
-#navigator-toolbox > toolbar:not(#toolbar-menubar):not(#TabsToolbar):not(#nav-bar):not(#addon-bar) {
-  overflow: -moz-hidden-unscrollable;
-  max-height: 4em;
-  transition: min-height 170ms ease-out, max-height 170ms ease-out;
-  padding: 1px 4px;
-}
-
-#navigator-toolbox > toolbar:not(#toolbar-menubar):not(#TabsToolbar):not(#nav-bar):not(#addon-bar)[collapsed=true] {
-  min-height: 0.1px;
-  max-height: 0;
-  transition: min-height 170ms ease-out, max-height 170ms ease-out, visibility 170ms linear;
-}
-
-#TabsToolbar:not([collapsed="true"]) + #nav-bar {
-  border-top: 1px solid hsla(0,0%,0%,.3) !important;
-  background-clip: padding-box;
-  /* Move up into the TabsToolbar for the inner highlight at the top of the nav-bar */
-  margin-top: calc(-1 * var(--navbar-tab-toolbar-highlight-overlap));
-  /* Position the toolbar above the bottom of background tabs */
-  position: relative;
-  z-index: 1;
-}
-
-#nav-bar {
-  box-shadow: 0 1px 0 @navbarInsetHighlight@ inset;
-  padding-top: 2px;
-  padding-bottom: 2px;
-}
-
-#nav-bar-overflow-button {
-  -moz-image-region: rect(-5px, 12px, 11px, -4px);
-}
-
-/* This only has an effect when this element is placed on the bookmarks toolbar.
- * It's 30px to make sure buttons with 18px icons fit along with the default 16px
- * icons, without changing the size of the toolbar.
- */
-#personal-bookmarks {
-  min-height: 30px;
-}
-
-#browser-bottombox {
-  /* opaque for layers optimization */
-  background-color: -moz-Dialog;
-}
-
-/* Places toolbar */
-toolbarbutton.bookmark-item:not(.subviewbutton),
-#personal-bookmarks[cui-areatype="toolbar"]:not([overflowedItem=true]) > #bookmarks-toolbar-placeholder {
-  margin: 0;
-  padding: 2px 3px;
-}
-
-toolbarbutton.bookmark-item:not(.subviewbutton):not(:hover):not(:active):not([open]) {
-  color: inherit;
-}
-
-toolbarbutton.bookmark-item:not(.subviewbutton) {
-  -moz-appearance: none;
-  border: 1px solid transparent;
-  border-radius: 2px;
-  transition-property: background-color, border-color;
-  transition-duration: 150ms;
-}
-
-toolbarbutton.bookmark-item:not(.subviewbutton):hover:not([open]) {
-  background: var(--toolbarbutton-hover-background);
-  border-color: var(--toolbarbutton-hover-bordercolor);
-}
-
-toolbarbutton.bookmark-item:not(.subviewbutton):hover:active,
-toolbarbutton.bookmark-item[open="true"] {
-  background: var(--toolbarbutton-active-background);
-  box-shadow: var(--toolbarbutton-active-boxshadow);
-  border-color: var(--toolbarbutton-active-bordercolor);
-}
-
-toolbarbutton.bookmark-item:not(.subviewbutton):hover:-moz-lwtheme {
-  background: var(--toolbarbutton-hover-background);
-  border-color: var(--toolbarbutton-hover-bordercolor);
-}
-
-.bookmark-item > .toolbarbutton-icon,
-#personal-bookmarks[cui-areatype="toolbar"] > #bookmarks-toolbar-placeholder > .toolbarbutton-icon {
-  width: 16px;
-  height: 16px;
-}
-
-/* Force the display of the label for bookmarks */
-.bookmark-item > .toolbarbutton-text,
-#personal-bookmarks[cui-areatype="toolbar"] > #bookmarks-toolbar-placeholder > .toolbarbutton-text {
-  display: -moz-box !important;
-}
-
-.bookmark-item > .toolbarbutton-menu-dropmarker {
-  display: none;
-}
-
-/* Dropmarker for folder bookmarks */
-.bookmark-item[container] > .toolbarbutton-menu-dropmarker {
-  display: -moz-box !important;
-}
-
-#bookmarks-toolbar-placeholder {
-  list-style-image: url("chrome://browser/skin/places/bookmarksToolbar.png") !important;
-}
-
-toolbarpaletteitem[place="palette"] > #personal-bookmarks > #bookmarks-toolbar-placeholder,
-#personal-bookmarks[cui-areatype="menu-panel"] > #bookmarks-toolbar-placeholder {
-  list-style-image: url("chrome://browser/skin/places/bookmarksToolbar-menuPanel.png") !important;
-}
-
-/* ----- BOOKMARK STAR ANIMATION ----- */
-
-@keyframes animation-bookmarkAdded {
-  from { transform: rotate(0deg) translateX(-16px) rotate(0deg) scale(1); opacity: 0; }
-  60%  { transform: rotate(180deg) translateX(-16px) rotate(-180deg) scale(2.2); opacity: 1; }
-  80%  { opacity: 1; }
-  to   { transform: rotate(180deg) translateX(-16px) rotate(-180deg) scale(1); opacity: 0; }
-}
-
-@keyframes animation-bookmarkPulse {
-  from { transform: scale(1); }
-  50%  { transform: scale(1.3); }
-  to   { transform: scale(1); }
-}
-
-#bookmarked-notification-container {
-  min-height: 1px;
-  min-width: 1px;
-  height: 1px;
-  margin-bottom: -1px;
-  z-index: 5;
-  position: relative;
-}
-
-#bookmarked-notification {
-  background-size: 16px;
-  background-position: center;
-  background-repeat: no-repeat;
-  width: 16px;
-  height: 16px;
-  opacity: 0;
-}
-
-#bookmarked-notification-dropmarker-anchor {
-  z-index: -1;
-  position: relative;
-}
-
-#bookmarked-notification-dropmarker-icon {
-  width: 18px;
-  height: 18px;
-  visibility: hidden;
-}
-
-#bookmarked-notification-anchor[notification="finish"] > #bookmarked-notification {
-  background-image: url("chrome://browser/skin/places/bookmarks-notification-finish.png");
-  animation: animation-bookmarkAdded 800ms;
-  animation-timing-function: ease, ease, ease;
-}
-
-#bookmarks-menu-button[notification="finish"] > .toolbarbutton-menubutton-dropmarker > .dropmarker-icon {
-  list-style-image: none !important;
-}
-
-#bookmarked-notification-dropmarker-anchor[notification="finish"] > #bookmarked-notification-dropmarker-icon {
-  visibility: visible;
-  animation: animation-bookmarkPulse 300ms;
-  animation-delay: 600ms;
-  animation-timing-function: ease-out;
-}
-
-/* Bookmark menus */
-menu.bookmark-item,
-menuitem.bookmark-item {
-  min-width: 0;
-  max-width: 32em;
-}
-
-.bookmark-item:not(.subviewbutton) > .menu-iconic-left {
-  margin-top: 0;
-  margin-bottom: 0;
-}
-
-.bookmark-item > .menu-iconic-left > .menu-iconic-icon {
-  padding-inline-start: 0px;
-}
-
-/* Bookmark drag and drop styles */
-.bookmark-item[dragover-into="true"] {
-  background: Highlight !important;
-  color: HighlightText !important;
-}
-
-/* rules for menupopup drop indicators */
-.menupopup-drop-indicator-bar {
-  position: relative;
-  /* these two margins must together compensate the indicator's height */
-  margin-top: -1px;
-  margin-bottom: -1px;
-}
-
-.menupopup-drop-indicator {
-  list-style-image: none;
-  height: 2px;
-  margin-inline-end: -4em;
-  background-color: Highlight;
-}
-
-/* Bookmarks toolbar */
-#PlacesToolbarDropIndicator {
-  list-style-image: url(chrome://browser/skin/places/toolbarDropMarker.png);
-}
-
-/* Bookmark items */
-.bookmark-item {
-  list-style-image: url("chrome://mozapps/skin/places/defaultFavicon.png");
-}
-
-.bookmark-item[container] {
-  list-style-image: url("moz-icon://stock/gtk-directory?size=menu");
-}
-
-.bookmark-item[container][livemark] {
-  list-style-image: url("chrome://browser/skin/feeds/feedIcon16.png");
-}
-
-.bookmark-item[container][livemark] .bookmark-item {
-  list-style-image: url("chrome://browser/skin/places/livemark-item.png");
-  -moz-image-region: rect(0px, 16px, 16px, 0px);
-}
-
-.bookmark-item[container][livemark] .bookmark-item[visited] {
-  -moz-image-region: rect(0px, 32px, 16px, 16px);
-}
-
-.bookmark-item[container][query] {
-  list-style-image: url("chrome://browser/skin/places/query.png");
-}
-
-.bookmark-item[query][tagContainer] {
-  list-style-image: url("chrome://browser/skin/places/tag.png");
-}
-
-.bookmark-item[query][dayContainer] {
-  list-style-image: url("chrome://browser/skin/places/calendar.png");
-}
-
-.bookmark-item[query][hostContainer] {
-  list-style-image: url("moz-icon://stock/gtk-directory?size=menu");
-}
-
-.bookmark-item[query][hostContainer][open] {
-  list-style-image: url("moz-icon://stock/gtk-directory?size=menu");
-}
-
-.bookmark-item[cutting] > .toolbarbutton-icon,
-.bookmark-item[cutting] > .menu-iconic-left > .menu-iconic-icon {
-  opacity: 0.5;
-}
-
-.bookmark-item[cutting] > .toolbarbutton-text,
-.bookmark-item[cutting] > .menu-iconic-left > .menu-iconic-text {
-  opacity: 0.7;
-}
-
-/* Primary toolbar buttons */
-
-:-moz-any(toolbar, .widget-overflow-list) .toolbarbutton-1 > .toolbarbutton-icon,
-:-moz-any(toolbar, .widget-overflow-list) .toolbarbutton-1 > :-moz-any(.toolbarbutton-menubutton-button, .toolbarbutton-badge-stack) > .toolbarbutton-icon {
-  max-width: 16px;
-}
-
-:-moz-any(toolbar, .widget-overflow-list) .toolbarbutton-1:-moz-any(@primaryToolbarButtons@, .toolbarbutton-legacy-addon) > .toolbarbutton-icon,
-:-moz-any(toolbar, .widget-overflow-list) .toolbarbutton-1:-moz-any(@primaryToolbarButtons@, .toolbarbutton-legacy-addon) > :-moz-any(.toolbarbutton-menubutton-button, .toolbarbutton-badge-stack) > .toolbarbutton-icon,
-#bookmarks-menu-button[cui-areatype="toolbar"] > .toolbarbutton-menubutton-dropmarker > .dropmarker-icon {
-  max-width: 18px;
-}
-
-.findbar-button,
-:-moz-any(#TabsToolbar, #nav-bar) .toolbarbutton-1 > .toolbarbutton-menubutton-button,
-:-moz-any(#TabsToolbar, #nav-bar) .toolbarbutton-1 {
-  -moz-appearance: none;
-}
-
-:-moz-any(#TabsToolbar, #nav-bar) .toolbarbutton-1[open="true"],
-:-moz-any(#TabsToolbar, #nav-bar) .toolbarbutton-1:hover:active {
-  padding: 3px;
-}
-
-.findbar-button > .toolbarbutton-text,
-:-moz-any(#TabsToolbar, #nav-bar) .toolbarbutton-1 > .toolbarbutton-menubutton-button > .toolbarbutton-icon,
-:-moz-any(#TabsToolbar, #nav-bar) .toolbarbutton-1 > .toolbarbutton-menubutton-dropmarker > .dropmarker-icon,
-:-moz-any(#TabsToolbar, #nav-bar) .toolbarbutton-1 > .toolbarbutton-badge-stack,
-:-moz-any(#TabsToolbar, #nav-bar) .toolbarbutton-1 > .toolbarbutton-icon {
-  margin-inline-end: 0;
-  padding: 2px 6px;
-  border: 1px solid transparent;
-  border-radius: 2px;
-  transition-property: background-color, border-color;
-  transition-duration: 150ms;
-}
-
-:-moz-any(#TabsToolbar, #nav-bar) .toolbarbutton-1:not(:-moz-any(@primaryToolbarButtons@, .toolbarbutton-legacy-addon)) > .toolbarbutton-icon,
-:-moz-any(#TabsToolbar, #nav-bar) .toolbarbutton-1:not(:-moz-any(@primaryToolbarButtons@, .toolbarbutton-legacy-addon)) > .toolbarbutton-badge-stack,
-:-moz-any(#TabsToolbar, #nav-bar) .toolbarbutton-1:not(:-moz-any(@primaryToolbarButtons@, .toolbarbutton-legacy-addon)) > .toolbarbutton-menubutton-button > .toolbarbutton-icon {
-  padding: 3px 7px;
-}
-
-:-moz-any(#TabsToolbar, #nav-bar) .toolbarbutton-1 > .toolbarbutton-icon,
-:-moz-any(#TabsToolbar, #nav-bar) .toolbarbutton-1 > .toolbarbutton-menubutton-button > .toolbarbutton-icon,
-:-moz-any(#TabsToolbar, #nav-bar) #bookmarks-menu-button[cui-areatype="toolbar"] > .toolbarbutton-menubutton-dropmarker > .dropmarker-icon {
-  /* horizontal padding + border + actual icon width */
-  max-width: 32px !important /* bug 561154 */;
-}
-
-#nav-bar #PanelUI-menu-button {
-  padding-inline-start: 5px;
-  padding-inline-end: 5px;
-}
-
-.findbar-button:not(:-moz-any([checked="true"],[disabled="true"])):hover > .toolbarbutton-text,
-:-moz-any(#TabsToolbar, #nav-bar) .toolbarbutton-1[open]:not([disabled=true]) > .toolbarbutton-menubutton-button > .toolbarbutton-icon,
-:-moz-any(#TabsToolbar, #nav-bar) .toolbarbutton-1:not([disabled=true]):not([open]):hover > .toolbarbutton-menubutton-button > .toolbarbutton-icon,
-:-moz-any(#TabsToolbar, #nav-bar) .toolbarbutton-1:not([disabled=true]):not([open]):hover > .toolbarbutton-menubutton-dropmarker > .dropmarker-icon,
-:-moz-any(#TabsToolbar, #nav-bar) .toolbarbutton-1:not([disabled=true]):hover > .toolbarbutton-badge-stack,
-:-moz-any(#TabsToolbar, #nav-bar) .toolbarbutton-1:not([disabled=true]):hover > .toolbarbutton-icon {
-  background: var(--toolbarbutton-hover-background);
-  background-clip: padding-box;
-  border-color: var(--toolbarbutton-hover-bordercolor);
-  box-shadow: var(--toolbarbutton-hover-boxshadow);
-}
-
-:-moz-any(#TabsToolbar, #nav-bar) .toolbarbutton-1:hover > .toolbarbutton-menubutton-dropmarker > .dropmarker-icon,
-:-moz-any(#TabsToolbar, #nav-bar) .toolbarbutton-1[open] > .toolbarbutton-menubutton-dropmarker > .dropmarker-icon {
-  margin-top: 4px;
-  margin-bottom: 4px;
-}
-
-.findbar-button:not([disabled=true]):-moz-any([checked="true"],:hover:active) > .toolbarbutton-text,
-:-moz-any(#TabsToolbar, #nav-bar) .toolbarbutton-1 > .toolbarbutton-menubutton-button:not([disabled=true]):-moz-any(:hover:active, [open="true"]) > .toolbarbutton-icon,
-:-moz-any(#TabsToolbar, #nav-bar) .toolbarbutton-1[open="true"] > .toolbarbutton-menubutton-dropmarker:not([disabled=true]) > .dropmarker-icon,
-:-moz-any(#TabsToolbar, #nav-bar) .toolbarbutton-1:not([disabled=true]):-moz-any([open],[checked],:hover:active) > .toolbarbutton-badge-stack,
-:-moz-any(#TabsToolbar, #nav-bar) .toolbarbutton-1:not([disabled=true]):-moz-any([open],[checked],:hover:active) > .toolbarbutton-icon {
-  background: var(--toolbarbutton-active-background);
-  background-clip: padding-box;
-  box-shadow: var(--toolbarbutton-active-boxshadow);
-  border-color: var(--toolbarbutton-active-bordercolor);
-  transition-duration: 10ms;
-}
-
-:-moz-any(#TabsToolbar, #nav-bar) .toolbarbutton-1[checked]:not(:active):hover > .toolbarbutton-icon {
-  background-color: var(--toolbarbutton-checkedhover-backgroundcolor);
-  transition: background-color 150ms;
-}
-
-:-moz-any(#TabsToolbar, #nav-bar) .toolbarbutton-1 > .toolbarbutton-menubutton-button[open],
-:-moz-any(#TabsToolbar, #nav-bar) .toolbarbutton-1 > .toolbarbutton-menubutton-button:hover:active,
-:-moz-any(#TabsToolbar, #nav-bar) .toolbarbutton-1:hover:active {
-  padding: 3px;
-}
-
-:-moz-any(#TabsToolbar, #nav-bar) .toolbaritem-combined-buttons {
-  margin-left: 2px;
-  margin-right: 2px;
-}
-
-:-moz-any(#TabsToolbar, #nav-bar) .toolbaritem-combined-buttons > .toolbarbutton-1 {
-  padding-left: 0;
-  padding-right: 0;
-}
-
-:-moz-any(#TabsToolbar, #nav-bar) .toolbaritem-combined-buttons:not(:hover) > separator,
-:-moz-any(#TabsToolbar, #nav-bar) .toolbarbutton-1:not(:hover):not(:active):not([open]) > .toolbarbutton-menubutton-dropmarker::before {
-  content: "";
-  display: -moz-box;
-  width: 1px;
-  height: 18px;
-  margin-inline-end: -1px;
-  background-image: linear-gradient(currentColor 0, currentColor 100%);
-  background-position: center;
-  background-repeat: no-repeat;
-  background-size: 1px 18px;
-  opacity: .2;
-}
-
-:-moz-any(#TabsToolbar, #nav-bar)[brighttext] .toolbaritem-combined-buttons > separator,
-:-moz-any(#TabsToolbar, #nav-bar)[brighttext] .toolbarbutton-1:not(:hover):not(:active):not([open]) > .toolbarbutton-menubutton-dropmarker::before {
-  opacity: .3;
-}
-
-:-moz-any(#TabsToolbar, #nav-bar) .toolbarbutton-1 > .toolbarbutton-menubutton-dropmarker {
-  margin-inline-start: -4px;
-  margin-top: 3px;
-  margin-bottom: 3px;
-}
-
-:-moz-any(#back-button, #forward-button) > .toolbarbutton-icon {
-  border-color: var(--urlbar-border-color) !important /* bug 561154 */;
-}
-
-:-moz-any(#back-button, #forward-button):not(:hover):not(:active):not([open=true]) > .toolbarbutton-icon,
-:-moz-any(#back-button, #forward-button)[disabled=true] > .toolbarbutton-icon {
-  background-color: rgba(255,255,255,.25) !important /* bug 561154 */;
-  background-clip: padding-box;
-}
-
-#back-button {
-  padding-top: 2px;
-  padding-bottom: 2px;
-  padding-inline-start: 4px;
-  padding-inline-end: 0;
-  position: relative;
-  z-index: 1;
-  border-radius: 0 10000px 10000px 0;
-}
-
-#back-button:-moz-locale-dir(rtl) {
-  border-radius: 10000px 0 0 10000px;
-}
-
-#back-button > menupopup {
-  margin-top: -1px;
-}
-
-#back-button > .toolbarbutton-icon {
-  border-radius: 10000px;
-  padding: 6px;
-  max-width: 32px; /* horizontal padding + border + icon width */
-}
-
-#back-button:-moz-locale-dir(rtl) > .toolbarbutton-icon {
-  transform: scaleX(-1);
-}
-
-#forward-button {
-  -moz-box-align: stretch; /* let the button shape grow vertically with the location bar */
-  padding: 0;
-}
-
-#forward-button > .toolbarbutton-icon {
-  padding-left: calc(var(--backbutton-urlbar-overlap) + 3px);
-  padding-right: 3px;
-  border-left-style: none;
-  border-radius: 0;
-  max-width: calc(var(--forwardbutton-width) + var(--backbutton-urlbar-overlap));
-}
-
-@conditionalForwardWithUrlbar@:not([switchingtabs]) > #forward-button {
-  transition: margin-left @forwardTransitionLength@ ease-out;
-}
-
-@conditionalForwardWithUrlbar@ > #forward-button[disabled] {
-  margin-left: calc(0px - var(--forwardbutton-width) - var(--backbutton-urlbar-overlap));
-}
-
-@conditionalForwardWithUrlbar@:hover:not([switchingtabs]) > #forward-button[disabled] {
-  /* delay the hiding of the forward button when hovered to avoid accidental clicks on the url bar */
-  transition-delay: 100s;
-}
-
-@conditionalForwardWithUrlbar@:not(:hover) > #forward-button[disabled] {
-  /* when not hovered anymore, trigger a new transition to hide the forward button immediately */
-  margin-left: calc(-0.01px - var(--forwardbutton-width) - var(--backbutton-urlbar-overlap));
-}
-
-/* undo close tab menu item */
-#alltabs_undoCloseTab {
-  list-style-image: url(chrome://browser/skin/undoCloseTab.png);
-}
-
-.unified-nav-back[_moz-menuactive] {
-  list-style-image: url("moz-icon://stock/gtk-go-back-ltr?size=menu") !important;
-}
-.unified-nav-back[_moz-menuactive]:-moz-locale-dir(rtl) {
-  list-style-image: url("moz-icon://stock/gtk-go-back-rtl?size=menu") !important;
-}
-.unified-nav-forward[_moz-menuactive] {
-  list-style-image: url("moz-icon://stock/gtk-go-forward-ltr?size=menu") !important;
-}
-.unified-nav-forward[_moz-menuactive]:-moz-locale-dir(rtl) {
-  list-style-image: url("moz-icon://stock/gtk-go-forward-rtl?size=menu") !important;
-}
-
-/* Menu panel buttons */
-
-%include ../shared/toolbarbuttons.inc.css
-%include ../shared/menupanel.inc.css
-
-#main-window:not([customizing]) .toolbarbutton-1[disabled=true] > .toolbarbutton-icon,
-#main-window:not([customizing]) .toolbarbutton-1[disabled=true] > .toolbarbutton-menu-dropmarker,
-#main-window:not([customizing]) .toolbarbutton-1[disabled=true] > .toolbarbutton-menubutton-dropmarker,
-#main-window:not([customizing]) .toolbarbutton-1[disabled=true] > .toolbarbutton-menubutton-button > .toolbarbutton-icon,
-#main-window:not([customizing]) .toolbarbutton-1 > .toolbarbutton-menubutton-button[disabled=true] > .toolbarbutton-icon {
-  opacity: 0.4;
-}
-
-/* Fullscreen window controls */
-#window-controls {
-  -moz-box-align: start;
-  margin-inline-start: 10px;
-}
-
-#minimize-button {
-  list-style-image: url("chrome://global/skin/icons/Minimize.gif");
-}
-#restore-button {
-  list-style-image: url("chrome://global/skin/icons/Restore.gif");
-}
-#close-button {
-  list-style-image: url("chrome://global/skin/icons/Close.gif");
-}
-
-/* Location bar */
-#main-window {
-  --urlbar-border-color: ThreeDShadow;
-}
-
-#navigator-toolbox:-moz-lwtheme {
-  --urlbar-border-color: rgba(0,0,0,.3);
-}
-
-#urlbar,
-.searchbar-textbox {
-  -moz-appearance: none;
-  padding: 0;
-  border: 1px solid var(--urlbar-border-color);
-  border-radius: 2px;
-  background-clip: padding-box;
-  margin: 0 3px;
-}
-
-#urlbar[focused],
-.searchbar-textbox[focused] {
-  border-color: Highlight;
-}
-
-#urlbar {
-  background-color: -moz-field;
-}
-
-#urlbar:-moz-lwtheme,
-.searchbar-textbox:-moz-lwtheme {
-  background-color: rgba(255,255,255,.8);
-  color: black;
-}
-
-#urlbar:-moz-lwtheme[focused=true],
-.searchbar-textbox:-moz-lwtheme[focused=true] {
-  background-color: white;
-}
-
-.urlbar-textbox-container {
-  -moz-appearance: none;
-  -moz-box-align: stretch;
-}
-
-.urlbar-input-box {
-  margin-inline-start: 0;
-}
-
-.urlbar-input-box,
-#urlbar-display-box {
-  padding-inline-start: 4px;
-  border-inline-start: 1px solid var(--urlbar-separator-color);
-  border-image: linear-gradient(transparent 15%, var(--urlbar-separator-color) 15%, var(--urlbar-separator-color) 85%, transparent 85%);
-  border-image-slice: 1;
-}
-
-.urlbar-history-dropmarker {
-  -moz-appearance: toolbarbutton-dropdown;
-  transition: opacity 0.15s ease;
-}
-
-#urlbar-wrapper[switchingtabs] > #urlbar > .urlbar-textbox-container > .urlbar-history-dropmarker {
-  transition: none;
-}
-
-#navigator-toolbox:not(:hover) #nav-bar:not([customizing="true"]) #urlbar:not([focused]) > .urlbar-textbox-container > .urlbar-history-dropmarker {
-  opacity: 0;
-}
-
-#urlbar-container {
-  -moz-box-align: center;
-}
-
-@conditionalForwardWithUrlbar@ > #urlbar {
-  border-inline-start: none;
-  margin-left: 0;
-}
-
-@conditionalForwardWithUrlbar@ > #urlbar:-moz-locale-dir(ltr) {
-  border-top-left-radius: 0;
-  border-bottom-left-radius: 0;
-}
-
-@conditionalForwardWithUrlbar@ > #urlbar:-moz-locale-dir(rtl) {
-  border-top-right-radius: 0;
-  border-bottom-right-radius: 0;
-}
-
-@conditionalForwardWithUrlbar@ {
-  clip-path: url("chrome://browser/content/browser.xul#urlbar-back-button-clip-path");
-  margin-inline-start: calc(-1 * var(--backbutton-urlbar-overlap));
-}
-
-@conditionalForwardWithUrlbar@:-moz-locale-dir(rtl),
-@conditionalForwardWithUrlbar@ > #urlbar:-moz-locale-dir(rtl) {
-  /* let urlbar-back-button-clip-path clip the urlbar's right side for RTL */
-  transform: scaleX(-1);
-}
-
-@conditionalForwardWithUrlbar@:-moz-locale-dir(rtl) {
-  -moz-box-direction: reverse;
-}
-
-#urlbar-icons {
-  -moz-box-align: center;
-}
-
-.urlbar-icon {
-  padding: 0 3px;
-  /* 16x16 icon with border-box sizing */
-  width: 22px;
-  height: 16px;
-}
-
-/* ::::: URL Bar Zoom Reset Button ::::: */
-@keyframes urlbar-zoom-reset-pulse {
-  0% {
-    transform: scale(0);
-  }
-  75% {
-    transform: scale(1.5);
-  }
-  100% {
-    transform: scale(1.0);
-  }
-}
-
-#urlbar-zoom-button {
-  -moz-appearance: none;
-  margin: 0 3px;
-  font-size: .8em;
-  padding: 0 8px;
-  border-radius: 1em;
-  background-color: hsla(0,0%,0%,.05);
-  color: inherit;
-  border: 1px solid ThreeDLightShadow;
-}
-
-#urlbar-zoom-button[animate="true"] {
-  animation-name: urlbar-zoom-reset-pulse;
-  animation-duration: 250ms;
-}
-
-#urlbar-zoom-button:hover {
-  background-color: hsla(0,0%,0%,.1);
-}
-
-#urlbar-zoom-button:hover:active {
-  background-color: hsla(0,0%,0%,.15);
-}
-
-#urlbar-zoom-button > .toolbarbutton-text {
-  display: -moz-box;
-}
-
-#urlbar-zoom-button > .toolbarbutton-icon {
-  display: none;
-}
-
-#urlbar-search-footer {
-  border-top: 1px solid var(--panel-separator-color);
-  background-color: var(--arrowpanel-dimmed);
-}
-
-#urlbar-search-settings {
-  -moz-appearance: none;
-  -moz-user-focus: ignore;
-  color: GrayText;
-  margin: 0;
-  border: 0;
-  padding: 8px 20px;
-  background: transparent;
-}
-
-#urlbar-search-settings:hover {
-  background-color: var(--arrowpanel-dimmed);
-}
-
-#urlbar-search-settings:hover:active {
-  background-color: var(--arrowpanel-dimmed-further);
-}
-
-#urlbar-search-splitter {
-  -moz-appearance: none;
-  width: 8px;
-  margin-inline-start: -4px;
-}
-
-#urlbar-search-splitter + #search-container > #searchbar > .searchbar-textbox {
-  margin-inline-start: 0;
-}
-
-#urlbar-display-box {
-  margin-top: -1px;
-  margin-bottom: -1px;
-}
-
-.urlbar-display {
-  margin-top: 0;
-  margin-bottom: 0;
-  margin-inline-start: 0;
-  color: GrayText;
-}
-
-%include ../shared/urlbarSearchSuggestionsNotification.inc.css
-
-#search-container {
-  min-width: calc(54px + 11ch);
-}
-
-/* identity box */
-
-#identity-box:-moz-locale-dir(ltr) {
-  border-top-left-radius: 1.5px;
-  border-bottom-left-radius: 1.5px;
-}
-
-#identity-box:-moz-locale-dir(rtl) {
-  border-top-right-radius: 1.5px;
-  border-bottom-right-radius: 1.5px;
-}
-
-#identity-box:-moz-focusring {
-  outline: 1px dotted;
-  outline-offset: -3px;
-}
-
-%include ../shared/identity-block/identity-block.inc.css
-
-%include ../shared/notification-icons.inc.css
-
-.popup-notification-body[popupid="addon-progress"],
-.popup-notification-body[popupid="addon-install-confirmation"] {
-  width: 28em;
-  max-width: 28em;
-}
-
-.addon-install-confirmation-name {
-  font-weight: bold;
-}
-
-/* Notification icon box */
-
-.notification-anchor-icon:-moz-focusring {
-  outline: 1px dotted -moz-DialogText;
-}
-
-/* Translation infobar */
-
-%include ../shared/translation/infobar.inc.css
-
-notification[value="translation"] {
-  min-height: 40px;
-}
-
-notification[value="translation"],
-notification[value="translation"] button,
-notification[value="translation"] menulist {
-  min-height: 30px;
-  color: #5A5959;
-}
-
-notification[value="translation"] {
-  background-color: #F2F1F0;
-}
-
-notification[value="translation"] button,
-notification[value="translation"] menulist {
-  padding-inline-end: 1ch;
-}
-
-notification[value="translation"] menulist {
-  border: 1px solid #C1C1C1;
-  background-color: #FFF;
-}
-
-notification[value="translation"] button {
-  border: 1px solid #C1C1C1;
-  background-color: #F2F1F0;
-}
-
-notification[value="translation"] button,
-notification[value="translation"] menulist,
-notification[value="translation"] menulist > .menulist-label-box {
-  margin-inline-start: 1ch;
-  margin-inline-end: 1ch;
-}
-
-notification[value="translation"] button:hover,
-notification[value="translation"] button:active,
-notification[value="translation"] menulist:hover,
-notification[value="translation"] menulist:active {
-  background-color: #E2E1E0;
-}
-
-notification[value="translation"] button[anonid="translate"] {
-  color: #FFF;
-  background-image: linear-gradient(#9FB938, #8DA726);
-  box-shadow: none;
-  border: 1px solid #829C1C;
-}
-
-notification[value="translation"] button[anonid="translate"]:hover,
-notification[value="translation"] button[anonid="translate"]:active {
-  background-image: linear-gradient(#8DA726, #8DA726);
-}
-
-notification[value="translation"] button > .button-box,
-notification[value="translation"] button[type="menu"] > .button-box > .button-menu-dropmarker {
-  padding: 0;
-  margin-inline-start: 3ch;
-}
-
-notification[value="translation"] button:not([type="menu"]) > .button-box {
-  margin-inline-end: 3ch;
-}
-
-notification[value="translation"] menulist > .menulist-dropmarker {
-  display: block;
-}
-
-/* AutoComplete */
-
-%include ../shared/autocomplete.inc.css
-
-#PopupAutoComplete > richlistbox > richlistitem[originaltype~="datalist-first"] {
-  border-top: 1px solid ThreeDShadow;
-}
-
-#treecolAutoCompleteImage {
-  max-width : 36px;
-}
-
-.autocomplete-richlistbox {
-  padding: 4px;
-}
-
-.autocomplete-richlistitem {
-  height: 30px;
-  min-height: 30px;
-  font: message-box;
-  border-radius: 2px;
-  border: 1px solid transparent;
-}
-
-.autocomplete-richlistitem[selected=true] {
-  background-color: Highlight;
-}
-
-.ac-title {
-  font-size: 1.05em;
-}
-
-.ac-tags {
-  font-size: 0.9em;
-}
-
-html|span.ac-tag {
-  background-color: MenuText;
-  color: Menu;
-  border-radius: 2px;
-  border: 1px solid transparent;
-  padding: 0 1px;
-}
-
-.ac-separator,
-.ac-url,
-.ac-action {
-  font-size: 0.9em;
-  color: -moz-nativehyperlinktext;
-}
-
-.ac-title[selected=true],
-.ac-separator[selected],
-.ac-url[selected=true],
-.ac-action[selected=true] {
-  color: inherit !important;
-}
-
-.ac-tags-text[selected] > html|span.ac-tag {
-  background-color: HighlightText;
-  color: Highlight;
-}
-
-html|span.ac-emphasize-text-title,
-html|span.ac-emphasize-text-tag,
-html|span.ac-emphasize-text-url {
-  font-weight: 600;
-}
-
-.ac-type-icon[type=bookmark] {
-  list-style-image: url("chrome://browser/skin/urlbar-star.svg#star");
-}
-
-.ac-type-icon[type=bookmark][selected][current] {
-  list-style-image: url("chrome://browser/skin/urlbar-star.svg#star-inverted");
-}
-
-.autocomplete-treebody::-moz-tree-image(bookmark, treecolAutoCompleteImage) {
-  list-style-image: url("chrome://browser/skin/places/autocomplete-star.png");
-  width: 16px;
-  height: 16px;
-}
-
-.ac-type-icon[type=keyword],
-.ac-site-icon[type=searchengine],
-.autocomplete-treebody::-moz-tree-image(keyword, treecolAutoCompleteImage) {
-  list-style-image: url(chrome://global/skin/icons/autocomplete-search.svg#search-icon);
-}
-
-.ac-type-icon[type=keyword][selected],
-.ac-site-icon[type=searchengine][selected],
-.autocomplete-treebody::-moz-tree-image(keyword, treecolAutoCompleteImage, selected) {
-  list-style-image: url(chrome://global/skin/icons/autocomplete-search.svg#search-icon-inverted);
-}
-
-.autocomplete-treebody::-moz-tree-image(tag, treecolAutoCompleteImage) {
-  list-style-image: url("chrome://browser/skin/places/tag.png");
-  width: 16px;
-  height: 16px;
-}
-
-.ac-type-icon[type=switchtab],
-.ac-type-icon[type=remotetab] {
-  list-style-image: url("chrome://browser/skin/urlbar-tab.svg#tab");
-}
-
-.ac-type-icon[type=switchtab][selected],
-.ac-type-icon[type=remotetab][selected] {
-  list-style-image: url("chrome://browser/skin/urlbar-tab.svg#tab-inverted");
-}
-
-.autocomplete-treebody::-moz-tree-cell-text(treecolAutoCompleteComment) {
-  color: GrayText;
-}
-
-.autocomplete-treebody::-moz-tree-cell-text(suggesthint, treecolAutoCompleteComment),
-.autocomplete-treebody::-moz-tree-cell-text(suggestfirst, treecolAutoCompleteComment) {
-  color: GrayText;
-  font-size: smaller;
-}
-
-.autocomplete-treebody::-moz-tree-cell(suggesthint) {
-  border-top: 1px solid GrayText;
-}
-
-/* Combined go/reload/stop button in location bar */
-
-#urlbar-go-button,
-#urlbar-reload-button,
-#urlbar-stop-button {
-  -moz-appearance: none;
-  list-style-image: url("chrome://browser/skin/reload-stop-go.png");
-  padding: 0 9px;
-  margin-inline-start: 5px;
-  border-inline-start: 1px solid var(--urlbar-separator-color);
-  border-image: linear-gradient(transparent 15%,
-                                var(--urlbar-separator-color) 15%,
-                                var(--urlbar-separator-color) 85%,
-                                transparent 85%);
-  border-image-slice: 1;
-}
-
-#urlbar-reload-button {
-  -moz-image-region: rect(0, 14px, 14px, 0);
-}
-
-#urlbar-reload-button:not([disabled]):hover {
-  -moz-image-region: rect(14px, 14px, 28px, 0);
-}
-
-#urlbar-reload-button:not([disabled]):hover:active {
-  -moz-image-region: rect(28px, 14px, 42px, 0);
-}
-
-#urlbar-reload-button:-moz-locale-dir(rtl) > .toolbarbutton-icon {
-  transform: scaleX(-1);
-}
-
-#urlbar-go-button {
-  -moz-image-region: rect(0, 42px, 14px, 28px);
-}
-
-#urlbar-go-button:hover {
-  -moz-image-region: rect(14px, 42px, 28px, 28px);
-}
-
-#urlbar-go-button:hover:active {
-  -moz-image-region: rect(28px, 42px, 42px, 28px);
-}
-
-#urlbar-go-button:-moz-locale-dir(rtl) > .toolbarbutton-icon {
-  transform: scaleX(-1);
-}
-
-#urlbar-stop-button {
-  -moz-image-region: rect(0, 28px, 14px, 14px);
-}
-
-#urlbar-stop-button:not([disabled]):hover {
-  -moz-image-region: rect(14px, 28px, 28px, 14px);
-}
-
-#urlbar-stop-button:hover:active {
-  -moz-image-region: rect(28px, 28px, 42px, 14px);
-}
-
-@media (min-resolution: 1.1dppx) {
-  #urlbar-go-button,
-  #urlbar-reload-button,
-  #urlbar-stop-button {
-    list-style-image: url("chrome://browser/skin/reload-stop-go@2x.png");
-  }
-
-  #urlbar-go-button > .toolbarbutton-icon,
-  #urlbar-reload-button > .toolbarbutton-icon,
-  #urlbar-stop-button > .toolbarbutton-icon {
-    width: 14px;
-  }
-
-  #urlbar-go-button {
-    -moz-image-region: rect(0, 84px, 28px, 56px);
-  }
-
-  #urlbar-go-button:hover {
-    -moz-image-region: rect(28px, 84px, 56px, 56px);
-  }
-
-  #urlbar-go-button:hover:active {
-    -moz-image-region: rect(56px, 84px, 84px, 56px);
-  }
-
-  #urlbar-reload-button {
-    -moz-image-region: rect(0, 28px, 28px, 0);
-  }
-
-  #urlbar-reload-button:not([disabled]):hover {
-    -moz-image-region: rect(28px, 28px, 56px, 0);
-  }
-
-  #urlbar-reload-button:not([disabled]):hover:active {
-    -moz-image-region: rect(56px, 28px, 84px, 0);
-  }
-
-  #urlbar-stop-button {
-    -moz-image-region: rect(0, 56px, 28px, 28px);
-  }
-
-  #urlbar-stop-button:not([disabled]):hover {
-    -moz-image-region: rect(28px, 56px, 56px, 28px);
-  }
-
-  #urlbar-stop-button:hover:active {
-    -moz-image-region: rect(56px, 56px, 84px, 28px);
-  }
-}
-
-/* Popup blocker button */
-#page-report-button {
-  list-style-image: url("chrome://browser/skin/Info.png");
-}
-
-/* Reader mode button */
-
-#reader-mode-button {
-  list-style-image: url("chrome://browser/skin/readerMode.svg");
-  -moz-image-region: rect(0, 16px, 16px, 0);
-}
-
-#reader-mode-button:hover,
-#reader-mode-button[readeractive]:hover {
-  -moz-image-region: rect(0, 32px, 16px, 16px);
-}
-
-#reader-mode-button:hover:active,
-#reader-mode-button[readeractive] {
-  -moz-image-region: rect(0, 48px, 16px, 32px);
-}
-
-/* bookmarks menu-button */
-
-#bookmarks-menu-button[cui-areatype="toolbar"] > .toolbarbutton-menubutton-dropmarker {
-  -moz-appearance: none !important;
-  -moz-box-align: center;
-}
-
-#bookmarks-menu-button[cui-areatype="toolbar"] > .toolbarbutton-menubutton-dropmarker > .dropmarker-icon {
-  margin-top: 3px;
-  margin-bottom: 3px;
-}
-
-#bookmarks-menu-button[disabled][cui-areatype="toolbar"] > .toolbarbutton-icon,
-#bookmarks-menu-button[disabled][cui-areatype="toolbar"] > .toolbarbutton-menu-dropmarker,
-#bookmarks-menu-button[disabled][cui-areatype="toolbar"] > .toolbarbutton-menubutton-dropmarker,
-#bookmarks-menu-button[disabled][cui-areatype="toolbar"] > .toolbarbutton-menubutton-button > .toolbarbutton-icon,
-#bookmarks-menu-button[cui-areatype="toolbar"] > .toolbarbutton-menubutton-button[disabled] > .toolbarbutton-icon {
-  opacity: .4;
-}
-
-#BMB_bookmarksPopup[side="top"],
-#BMB_bookmarksPopup[side="bottom"] {
-  margin-left: -16px;
-  margin-right: -16px;
-}
-
-#BMB_bookmarksPopup[side="left"],
-#BMB_bookmarksPopup[side="right"] {
-  margin-top: -16px;
-  margin-bottom: -16px;
-}
-
-#nav-bar .toolbarbutton-1 > menupopup[side="top"].cui-widget-panel,
-#nav-bar .toolbarbutton-1 > menupopup[side="bottom"].cui-widget-panel {
-  margin-top: -4px;
-}
-
-/* Bookmarking panel */
-#editBookmarkPanelStarIcon {
-  list-style-image: url("chrome://browser/skin/places/starred48.png");
-  width: 48px;
-  height: 48px;
-}
-
-#editBookmarkPanelStarIcon[unstarred] {
-  list-style-image: url("chrome://browser/skin/places/unstarred48.png");
-}
-
-#editBookmarkPanelTitle {
-  font-size: 130%;
-}
-
-#editBookmarkPanelHeader,
-#editBookmarkPanelContent {
-  margin-bottom: .5em;
-}
-
-/* Implements editBookmarkPanel resizing on folderTree un-collapse. */
-#editBMPanel_folderTree {
-  min-width: 27em;
-}
-
-/* Content area */
-#sidebar {
-  background-color: Window;
-}
-
-#sidebar-header > .close-icon:not(:hover):-moz-lwtheme-brighttext {
-  background-image: -moz-image-rect(url("chrome://global/skin/icons/close.svg"), 0, 80, 16, 64);
-}
-
-.browserContainer > findbar {
-  background-color: -moz-dialog;
-  color: -moz-DialogText;
-  text-shadow: none;
-}
-
-/* Tabstrip */
-
-%include ../shared/tabs.inc.css
-
-#tabbrowser-tabs {
-  /* override the global style to allow the selected tab to be above the nav-bar */
-  z-index: auto;
-}
-
-#TabsToolbar {
-  min-height: 0;
-  padding: 0;
-  margin-bottom: calc(-1 * var(--tab-toolbar-navbar-overlap));
-}
-
-#TabsToolbar:not(:-moz-lwtheme) {
-  -moz-appearance: menubar;
-  color: -moz-menubartext;
-}
-
-#toolbar-menubar:not([autohide="true"]):not(:-moz-lwtheme):-moz-system-metric(menubar-drag),
-#TabsToolbar:not(:-moz-lwtheme):-moz-system-metric(menubar-drag) {
-  -moz-binding: url("chrome://browser/content/customizableui/toolbar.xml#toolbar-drag");
-}
-
-.tabbrowser-tab:focus > .tab-stack > .tab-content {
-  outline: 1px dotted;
-  outline-offset: -6px;
-}
-
-#context_reloadTab {
-  list-style-image: url("moz-icon://stock/gtk-refresh?size=menu");
-}
-
-#context_closeOtherTabs {
-  list-style-image: url("moz-icon://stock/gtk-clear?size=menu");
-}
-
-#context_closeOtherTabs[disabled] {
-  list-style-image: url("moz-icon://stock/gtk-clear?size=menu&state=disabled");
-}
-
-#context_undoCloseTab {
-  list-style-image: url("moz-icon://stock/gtk-undelete?size=menu");
-}
-
-#context_closeTab {
-  list-style-image: url("moz-icon://stock/gtk-close?size=menu");
-}
-
-/* Tab drag and drop */
-.tab-drop-indicator {
-  list-style-image: url(chrome://browser/skin/tabbrowser/tabDragIndicator.png);
-  margin-bottom: -9px;
-  z-index: 3;
-}
-
-/* Tab close button */
-.tab-close-button:not([selected]):not(:hover) {
-  background-image: -moz-image-rect(url("chrome://global/skin/icons/close.svg"), 0, 64, 16, 48);
-}
-
-.tab-close-button:not(:hover):-moz-lwtheme-brighttext,
-#TabsToolbar[brighttext] .tab-close-button:not([selected]):not(:hover) {
-  background-image: -moz-image-rect(url("chrome://global/skin/icons/close.svg"), 0, 80, 16, 64);
-}
-
-.tab-close-button:not(:hover):-moz-lwtheme-darktext {
-  background-image: -moz-image-rect(url("chrome://global/skin/icons/close.svg"), 0, 96, 16, 80);
-}
-
-/* Tabstrip new tab button */
-.tabs-newtab-button,
-#TabsToolbar > #new-tab-button ,
-#TabsToolbar > toolbarpaletteitem > #new-tab-button {
-  list-style-image: url(chrome://browser/skin/tabbrowser/newtab.svg);
-  -moz-image-region: auto;
-}
-
-#TabsToolbar[brighttext] .tabs-newtab-button,
-#TabsToolbar[brighttext] > #new-tab-button,
-#TabsToolbar[brighttext] > toolbarpaletteitem > #new-tab-button {
-  list-style-image: url(chrome://browser/skin/tabbrowser/newtab-inverted.svg);
-}
-
-/* Tabbrowser arrowscrollbox arrows */
-.tabbrowser-arrowscrollbox > .scrollbutton-up > .toolbarbutton-icon,
-.tabbrowser-arrowscrollbox > .scrollbutton-down > .toolbarbutton-icon {
-  -moz-appearance: none;
-}
-
-.tabbrowser-arrowscrollbox > .scrollbutton-up,
-.tabbrowser-arrowscrollbox > .scrollbutton-down {
-  -moz-appearance: none;
-  list-style-image: url("chrome://browser/skin/tabbrowser/tab-arrow-left.png");
-  margin: 0 0 var(--tab-toolbar-navbar-overlap);
-}
-
-#TabsToolbar[brighttext] > #tabbrowser-tabs > .tabbrowser-arrowscrollbox > .scrollbutton-up,
-#TabsToolbar[brighttext] > #tabbrowser-tabs > .tabbrowser-arrowscrollbox > .scrollbutton-down {
-  list-style-image: url(chrome://browser/skin/tabbrowser/tab-arrow-left-inverted.png);
-}
-
-.tabbrowser-arrowscrollbox > .scrollbutton-up[disabled],
-.tabbrowser-arrowscrollbox > .scrollbutton-down[disabled] {
-  opacity: .4;
-}
-
-.tabbrowser-arrowscrollbox > .scrollbutton-up:-moz-locale-dir(rtl),
-.tabbrowser-arrowscrollbox > .scrollbutton-down:-moz-locale-dir(ltr) {
-  transform: scaleX(-1);
-}
-
-.tabbrowser-arrowscrollbox > .scrollbutton-down {
-  transition: 1s background-color ease-out;
-}
-
-.tabbrowser-arrowscrollbox > .scrollbutton-down[notifybgtab] {
-  background-color: Highlight;
-  transition: none;
-}
-
-#TabsToolbar .toolbarbutton-1 {
-  margin-bottom: var(--tab-toolbar-navbar-overlap);
-}
-
-#alltabs-button {
-  list-style-image: url("chrome://browser/skin/tabbrowser/alltabs.png");
-}
-
-#TabsToolbar[brighttext] > #alltabs-button,
-#TabsToolbar[brighttext] > toolbarpaletteitem > #alltabs-button {
-  list-style-image: url("chrome://browser/skin/tabbrowser/alltabs-inverted.png");
-}
-
-#alltabs-button > .toolbarbutton-icon {
-  padding: 9px 6px 6px;
-}
-
-#alltabs-button > .toolbarbutton-menu-dropmarker {
-  display: none;
-}
-
-/* All tabs menupopup */
-.alltabs-item > .menu-iconic-left > .menu-iconic-icon {
-  list-style-image: url("chrome://mozapps/skin/places/defaultFavicon.png");
-}
-
-.alltabs-item[selected="true"] {
-  font-weight: bold;
-}
-
-.alltabs-item[busy] > .menu-iconic-left > .menu-iconic-icon {
-  list-style-image: url("chrome://global/skin/icons/loading.png");
-}
-
-/* Sidebar */
-#sidebar-throbber[loading="true"] {
-  list-style-image: url("chrome://global/skin/icons/loading.png");
-  margin-inline-end: 4px;
-}
-
-toolbarbutton.chevron {
-  list-style-image: url("chrome://global/skin/toolbar/chevron.gif") !important;
-}
-
-toolbar[brighttext] toolbarbutton.chevron {
-  list-style-image: url("chrome://global/skin/toolbar/chevron-inverted.png") !important;
-}
-
-toolbarbutton.chevron:-moz-locale-dir(rtl) > .toolbarbutton-icon {
-  transform: scaleX(-1);
-}
-
-toolbarbutton.chevron > .toolbarbutton-text,
-toolbarbutton.chevron > .toolbarbutton-menu-dropmarker {
-  display: none;
-}
-
-toolbarbutton.chevron > .toolbarbutton-icon {
-  margin: 0;
-}
-
-/* Status panel */
-
-.statuspanel-label {
-  margin: 0;
-  padding: 2px 4px;
-  background: -moz-dialog;
-  border: 1px none ThreeDShadow;
-  border-top-style: solid;
-  color: -moz-dialogText;
-  text-shadow: none;
-}
-
-.statuspanel-label:-moz-locale-dir(ltr):not([mirror]),
-.statuspanel-label:-moz-locale-dir(rtl)[mirror] {
-  border-right-style: solid;
-  border-top-right-radius: .3em;
-  margin-right: 1em;
-}
-
-.statuspanel-label:-moz-locale-dir(rtl):not([mirror]),
-.statuspanel-label:-moz-locale-dir(ltr)[mirror] {
-  border-left-style: solid;
-  border-top-left-radius: .3em;
-  margin-left: 1em;
-}
-
-%include ../shared/fullscreen/warning.inc.css
-%include ../shared/ctrlTab.inc.css
-%include ../../../devtools/client/themes/responsivedesign.inc.css
-%include ../../../devtools/client/themes/commandline.inc.css
-%include ../shared/plugin-doorhanger.inc.css
-
-notification.pluginVulnerable > .notification-inner > .messageCloseButton:not(:hover) {
-  background-image: -moz-image-rect(url("chrome://global/skin/icons/close.svg"), 0, 80, 16, 64);
-}
-
-
-%include downloads/indicator.css
-
-.gcli-panel {
-  padding: 0;
-}
-
-.gclitoolbar-input-node > .textbox-input-box > html|*.textbox-input::-moz-selection {
-  color: hsl(210,11%,16%);
-}
-
-/* Error counter */
-
-#developer-toolbar-toolbox-button[error-count]:before {
-  color: #FDF3DE;
-  min-width: 16px;
-  text-shadow: none;
-  background-image: linear-gradient(#B4211B, #8A1915);
-  border-radius: 1px;
-  margin-inline-end: 2px;
-}
-
-/* Customization mode */
-
-%include ../shared/customizableui/customizeMode.inc.css
-
-#main-window[customize-entered] > #tab-view-deck {
-  background-image: url("chrome://browser/skin/customizableui/customizeMode-gridTexture.png"),
-                    linear-gradient(to bottom, #bcbcbc, #b5b5b5);
-  background-attachment: fixed;
-}
-
-#main-window[customization-lwtheme] > #tab-view-deck:-moz-lwtheme {
-  background-repeat: no-repeat;
-  background-position: right top;
-  background-attachment: fixed;
-  /* The image will get set from CustomizeMode.jsm */
-  background-image: none;
-  background-color: transparent;
-}
-
-#main-window[customization-lwtheme]:-moz-lwtheme {
-  background-image: url("chrome://browser/skin/customizableui/customizeMode-gridTexture.png"),
-                    url("chrome://browser/skin/customizableui/background-noise-toolbar.png"),
-                    linear-gradient(to bottom, #bcbcbc, #b5b5b5);
-  background-color: #b5b5b5;
-  background-repeat: repeat;
-  background-attachment: fixed;
-  background-position: left top;
-}
-
-#main-window[customize-entered] #browser-bottombox,
-#main-window[customize-entered] #navigator-toolbox > toolbar:not(#toolbar-menubar):not(#TabsToolbar),
-#main-window[customize-entered] #customization-container {
-  border: 3px solid hsla(0,0%,0%,.1);
-  border-top-width: 0;
-  background-clip: padding-box;
-  background-origin: padding-box;
-  -moz-border-right-colors: hsla(0,0%,0%,.05) hsla(0,0%,0%,.1) hsla(0,0%,0%,.2);
-  -moz-border-bottom-colors: hsla(0,0%,0%,.05) hsla(0,0%,0%,.1) hsla(0,0%,0%,.2);
-  -moz-border-left-colors: hsla(0,0%,0%,.05) hsla(0,0%,0%,.1) hsla(0,0%,0%,.2);
-}
-
-#main-window[customize-entered] #customization-container,
-#main-window[customize-entered] #navigator-toolbox > toolbar:not(#toolbar-menubar):not(#TabsToolbar) {
-  border-bottom-width: 0;
-}
-
-#main-window[customize-entered] #TabsToolbar {
-  -moz-appearance: none;
-  background-clip: padding-box;
-  border-right: 3px solid transparent;
-  border-left: 3px solid transparent;
-}
-
-/* End customization mode */
-
-
-#main-window[privatebrowsingmode=temporary] #private-browsing-indicator {
-  background: url("chrome://browser/skin/privatebrowsing-mask.png") center no-repeat;
-  width: 40px;
-}
-
-%include ../shared/contextmenu.inc.css
-
-#context-navigation > .menuitem-iconic > .menu-iconic-left {
-  /* override toolkit/themes/linux/global/menu.css */
-  padding-inline-end: 0 !important;
-  margin-inline-end: 0 !important;
-}
-
-.browser-extension-panel > .panel-arrowcontainer > .panel-arrowcontent {
-  padding: 0;
-  overflow: hidden;
-}
-
-.webextension-popup-browser {
-  border-radius: inherit;
-}
diff --git a/browser/themes/linux/click-to-play-warning-stripes.png b/browser/themes/linux/click-to-play-warning-stripes.png
deleted file mode 100644
index 29f15f7b8..000000000
--- a/browser/themes/linux/click-to-play-warning-stripes.png
+++ /dev/null
diff --git a/browser/themes/linux/communicator/communicator.css b/browser/themes/linux/communicator/communicator.css
deleted file mode 100644
index 0b57574fd..000000000
--- a/browser/themes/linux/communicator/communicator.css
+++ /dev/null
@@ -1,6 +0,0 @@
-/* This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
-
-@import url("chrome://global/skin/");
-
diff --git a/browser/themes/linux/communicator/jar.mn b/browser/themes/linux/communicator/jar.mn
deleted file mode 100644
index dfd20c523..000000000
--- a/browser/themes/linux/communicator/jar.mn
+++ /dev/null
@@ -1,7 +0,0 @@
-# This Source Code Form is subject to the terms of the Mozilla Public
-# License, v. 2.0. If a copy of the MPL was not distributed with this
-# file, You can obtain one at http://mozilla.org/MPL/2.0/.
-
-browser.jar:
-% skin communicator classic/1.0 %skin/classic/communicator/
-        skin/classic/communicator/communicator.css
diff --git a/browser/themes/linux/communicator/moz.build b/browser/themes/linux/communicator/moz.build
deleted file mode 100644
index eb4454d28..000000000
--- a/browser/themes/linux/communicator/moz.build
+++ /dev/null
@@ -1,7 +0,0 @@
-# -*- Mode: python; indent-tabs-mode: nil; tab-width: 40 -*-
-# vim: set filetype=python:
-# This Source Code Form is subject to the terms of the Mozilla Public
-# License, v. 2.0. If a copy of the MPL was not distributed with this
-# file, You can obtain one at http://mozilla.org/MPL/2.0/.
-
-JAR_MANIFESTS += ['jar.mn']
\ No newline at end of file
diff --git a/browser/themes/linux/controlcenter/panel.css b/browser/themes/linux/controlcenter/panel.css
deleted file mode 100644
index fab9aa3a4..000000000
--- a/browser/themes/linux/controlcenter/panel.css
+++ /dev/null
@@ -1,13 +0,0 @@
-/* This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
-
-%include ../../shared/controlcenter/panel.inc.css
-
-.identity-popup-expander:-moz-focusring {
-  padding: 1px;
-}
-
-.identity-popup-expander:-moz-focusring > .button-box {
-  outline: 1px -moz-dialogtext dotted;
-}
diff --git a/browser/themes/linux/customizableui/background-noise-toolbar.png b/browser/themes/linux/customizableui/background-noise-toolbar.png
deleted file mode 100644
index d09ba9daf..000000000
--- a/browser/themes/linux/customizableui/background-noise-toolbar.png
+++ /dev/null
diff --git a/browser/themes/linux/customizableui/customizeMode-gridTexture.png b/browser/themes/linux/customizableui/customizeMode-gridTexture.png
deleted file mode 100644
index a7c2775cf..000000000
--- a/browser/themes/linux/customizableui/customizeMode-gridTexture.png
+++ /dev/null
diff --git a/browser/themes/linux/customizableui/customizeMode-separatorHorizontal.png b/browser/themes/linux/customizableui/customizeMode-separatorHorizontal.png
deleted file mode 100644
index 5e17cb4db..000000000
--- a/browser/themes/linux/customizableui/customizeMode-separatorHorizontal.png
+++ /dev/null
diff --git a/browser/themes/linux/customizableui/customizeMode-separatorVertical.png b/browser/themes/linux/customizableui/customizeMode-separatorVertical.png
deleted file mode 100644
index dc4caee81..000000000
--- a/browser/themes/linux/customizableui/customizeMode-separatorVertical.png
+++ /dev/null
diff --git a/browser/themes/linux/customizableui/panelUI.css b/browser/themes/linux/customizableui/panelUI.css
deleted file mode 100644
index 0037b5634..000000000
--- a/browser/themes/linux/customizableui/panelUI.css
+++ /dev/null
@@ -1,90 +0,0 @@
-/* This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
-
-%include ../../shared/customizableui/panelUI.inc.css
-
-.panel-subviews {
-  background-color: var(--arrowpanel-background);
-}
-
-#BMB_bookmarksPopup > menuitem[type="checkbox"] {
-  -moz-appearance: none !important; /* important, to override toolkit rule */
-}
-
-#BMB_bookmarksPopup menupopup {
-  -moz-appearance: none;
-  background: var(--arrowpanel-background);
-  color: var(--arrowpanel-color);
-  border: 1px solid var(--arrowpanel-border-color);
-  margin-top: -6px;
-  padding-top: 1px;
-}
-
-/* Add some space at the top because there are no headers: */
-#BMB_bookmarksPopup menupopup > hbox > .popup-internal-box > .arrowscrollbox-scrollbox > .scrollbox-innerbox  {
-  padding-top: 4px;
-}
-
-.subviewbutton > .toolbarbutton-text {
-  padding-top: 3px;
-  padding-bottom: 3px;
-}
-
-.widget-overflow-list .toolbarbutton-1 > .toolbarbutton-menubutton-button {
-  -moz-appearance: none;
-  border: 0;
-  margin-inline-start: 3px;
-}
-
-.widget-overflow-list .toolbarbutton-1 > .toolbarbutton-menubutton-dropmarker {
-  margin-inline-start: 0;
-}
-
-.subviewbutton > .toolbarbutton-text {
-  padding-inline-start: 16px;
-}
-
-.subviewbutton:-moz-any([image],[targetURI],.cui-withicon, .restoreallitem, .bookmark-item) > .toolbarbutton-text {
-  padding-inline-start: 0;
-}
-
-.subviewbutton:-moz-any([image],[targetURI],.cui-withicon, .restoreallitem, .bookmark-item)[checked="true"] > .toolbarbutton-icon {
-  visibility: hidden;
-}
-
-menuitem.subviewbutton {
-  -moz-appearance: none !important;
-}
-
-menu.subviewbutton > .menu-right {
-  -moz-appearance: none;
-  list-style-image: url(chrome://browser/skin/places/bookmarks-menu-arrow.png);
-  -moz-image-region: rect(0, 16px, 16px, 0);
-  width: 16px;
-  height: 16px;
-}
-
-menu[disabled="true"].subviewbutton > .menu-right {
-  -moz-image-region: rect(0, 32px, 16px, 16px);
-}
-
-menu.subviewbutton > .menu-right:-moz-locale-dir(rtl) {
-  transform: scaleX(-1);
-}
-
-.subviewbutton > .toolbarbutton-icon {
-  margin-inline-end: 5px !important;
-}
-
-.subviewbutton > .menu-right,
-.subviewbutton > .menu-iconic-left {
-  padding-top: 1px;
-  /* These need !important to override menu.css */
-  margin-top: 1px !important;
-  margin-bottom: 2px !important;
-}
-
-.subviewradio > .radio-label-box {
-  -moz-appearance: none;
-}
diff --git a/browser/themes/linux/devedition.css b/browser/themes/linux/devedition.css
deleted file mode 100644
index 1f16d5d63..000000000
--- a/browser/themes/linux/devedition.css
+++ /dev/null
@@ -1,106 +0,0 @@
-% This Source Code Form is subject to the terms of the Mozilla Public
-% License, v. 2.0. If a copy of the MPL was not distributed with this
-% file, You can obtain one at http://mozilla.org/MPL/2.0/.
-
-%include ../shared/devedition.inc.css
-
-:root {
-  --forwardbutton-width: 29px;
-}
-
-:root[devtoolstheme="light"] {
-  --urlbar-dropmarker-url: url("chrome://browser/skin/devedition/urlbar-history-dropmarker.svg");
-  --urlbar-dropmarker-region: rect(0px, 11px, 14px, 0px);
-  --urlbar-dropmarker-hover-region: rect(0, 22px, 14px, 11px);
-  --urlbar-dropmarker-active-region: rect(0px, 33px, 14px, 22px);
-  --urlbar-dropmarker-2x-url: url("chrome://browser/skin/devedition/urlbar-history-dropmarker.svg");
-  --urlbar-dropmarker-2x-region: rect(0px, 11px, 14px, 0px);
-  --urlbar-dropmarker-hover-2x-region: rect(0, 22px, 14px, 11px);
-  --urlbar-dropmarker-active-2x-region: rect(0px, 33px, 14px, 22px);
-}
-
-:root[devtoolstheme="dark"] .findbar-closebutton:not(:hover),
-:root[devtoolstheme="dark"] #sidebar-header > .close-icon:not(:hover),
-.tab-close-button[selected]:not(:hover) {
-  background-image: -moz-image-rect(url("chrome://global/skin/icons/close.svg"), 0, 80, 16, 64);
-}
-
-/* The menubar and tabs toolbar should match the devedition theme */
-#TabsToolbar,
-#toolbar-menubar {
-  -moz-appearance: none !important;
-}
-#main-menubar {
-  color: var(--chrome-color);
-}
-#main-menubar > menu:not([open]) {
-  color: inherit;
-}
-
-/* Allow buttons with -moz-appearance set to look normal on hover and open states */
-#navigator-toolbox .toolbarbutton-1:-moz-any(:hover, [open="true"]),
-#PlacesToolbar toolbarbutton.bookmark-item:-moz-any(:hover, [open="true"]) {
-  color: initial;
-}
-
-/* Square back and forward buttons */
-#back-button > .toolbarbutton-icon,
-#forward-button > .toolbarbutton-icon {
-  margin: 0;
-  border: 1px solid var(--chrome-nav-bar-controls-border-color);
-  padding: 2px 5px;
-  background: var(--chrome-nav-buttons-background);
-  box-shadow: none !important;
-}
-
-#forward-button > .toolbarbutton-icon {
-  border-inline-start: none;
-}
-
-/* Override a box shadow for disabled back button */
-#main-window:not([customizing]) #back-button[disabled] > .toolbarbutton-icon {
-  box-shadow: none !important;
-}
-
-#back-button:hover:not([disabled="true"]) > .toolbarbutton-icon,
-#forward-button:hover:not([disabled="true"]) > .toolbarbutton-icon {
-  background: var(--chrome-nav-buttons-hover-background) !important;
-}
-
-#back-button > .toolbarbutton-icon {
-  border-radius: 2px 0 0 2px !important;
-}
-
-.urlbar-history-dropmarker {
-  -moz-appearance: none;
-  padding: 0 3px;
-  list-style-image: var(--urlbar-dropmarker-url);
-  -moz-image-region: var(--urlbar-dropmarker-region);
-}
-
-/* Add the proper background for tab overflow */
-#alltabs-button,
-#new-tab-button {
-  background: var(--chrome-background-color);
-}
-
-#new-tab-button:hover > .toolbarbutton-icon {
-  border-color: transparent !important;
-}
-
-/* Prevent double border below tabs toolbar */
-#TabsToolbar:not([collapsed="true"]) + #nav-bar {
-  border-top-width: 0 !important;
-}
-
-/* Fix the bad-looking text-shadow in the sidebar header: */
-.sidebar-header,
-#sidebar-header {
-  text-shadow: none;
-}
-
-.ac-type-icon {
-  /* Left-align the type icon in awesomebar popup results with the icon in the
-     urlbar. */
-  margin-inline-start: 11px;
-}
diff --git a/browser/themes/linux/downloads/allDownloadsViewOverlay.css b/browser/themes/linux/downloads/allDownloadsViewOverlay.css
deleted file mode 100644
index f5a05c9b0..000000000
--- a/browser/themes/linux/downloads/allDownloadsViewOverlay.css
+++ /dev/null
@@ -1,11 +0,0 @@
-/* This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
-
-%include ../../shared/downloads/allDownloadsViewOverlay.inc.css
-
-/*** List items ***/
-
-:root {
-  --downloads-item-height: 5em;
-}
diff --git a/browser/themes/linux/downloads/download-glow-menuPanel.png b/browser/themes/linux/downloads/download-glow-menuPanel.png
deleted file mode 100644
index b8443f045..000000000
--- a/browser/themes/linux/downloads/download-glow-menuPanel.png
+++ /dev/null
diff --git a/browser/themes/linux/downloads/download-notification-finish.png b/browser/themes/linux/downloads/download-notification-finish.png
deleted file mode 100644
index f5fa12053..000000000
--- a/browser/themes/linux/downloads/download-notification-finish.png
+++ /dev/null
diff --git a/browser/themes/linux/downloads/download-notification-start.png b/browser/themes/linux/downloads/download-notification-start.png
deleted file mode 100644
index bd548b183..000000000
--- a/browser/themes/linux/downloads/download-notification-start.png
+++ /dev/null
diff --git a/browser/themes/linux/downloads/downloads.css b/browser/themes/linux/downloads/downloads.css
deleted file mode 100644
index 41ea68d43..000000000
--- a/browser/themes/linux/downloads/downloads.css
+++ /dev/null
@@ -1,21 +0,0 @@
-/* This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
-
-%include ../../shared/downloads/downloads.inc.css
-
-/*** List items and similar elements in the summary ***/
-
-:root {
-  --downloads-item-height: 5.5em;
-  --downloads-item-font-size-factor: 0.9;
-  --downloads-item-details-opacity: 0.6;
-}
-
-@keyfocus@ @itemFocused@,
-@keyfocus@ #downloadsSummary:focus,
-@keyfocus@ .downloadsPanelFooterButton:focus,
-.downloadButton:focus {
-  outline: 1px -moz-dialogtext dotted;
-  outline-offset: -1px;
-}
diff --git a/browser/themes/linux/downloads/indicator.css b/browser/themes/linux/downloads/indicator.css
deleted file mode 100644
index 6e9d9ace5..000000000
--- a/browser/themes/linux/downloads/indicator.css
+++ /dev/null
@@ -1,218 +0,0 @@
-/* This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
-
-/*** Status and progress indicator ***/
-
-#downloads-animation-container {
-  min-height: 1px;
-  min-width: 1px;
-  height: 1px;
-  margin-bottom: -1px;
-  /* Makes the outermost animation container element positioned, so that its
-     contents are rendered over the main browser window in the Z order.
-     This is required by the animated event notification. */
-  position: relative;
-  /* The selected tab may overlap #downloads-indicator-notification */
-  z-index: 5;
-}
-
-/*** Main indicator icon ***/
-
-@media not all and (min-resolution: 1.1dppx) {
-  #downloads-button {
-    --downloads-indicator-icon: -moz-image-rect(url("chrome://browser/skin/Toolbar.png"), 0, 198, 18, 180);
-    --downloads-indicator-icon-attention: -moz-image-rect(url("chrome://browser/skin/Toolbar.png"), 18, 198, 36, 180);
-    --downloads-indicator-icon-inverted: -moz-image-rect(url("chrome://browser/skin/Toolbar-inverted.png"), 0, 198, 18, 180);
-    --downloads-indicator-icon-attention-inverted: -moz-image-rect(url("chrome://browser/skin/Toolbar-inverted.png"), 18, 198, 36, 180);
-  }
-}
-
-@media (min-resolution: 1.1dppx) {
-  #downloads-button {
-    --downloads-indicator-icon: -moz-image-rect(url("chrome://browser/skin/Toolbar@2x.png"), 0, 396, 36, 360);
-    --downloads-indicator-icon-attention: -moz-image-rect(url("chrome://browser/skin/Toolbar@2x.png"), 36, 396, 72, 360);
-    --downloads-indicator-icon-inverted: -moz-image-rect(url("chrome://browser/skin/Toolbar-inverted@2x.png"), 0, 396, 36, 360);
-    --downloads-indicator-icon-attention-inverted: -moz-image-rect(url("chrome://browser/skin/Toolbar-inverted@2x.png"), 36, 396, 72, 360);
-  }
-}
-
-#downloads-button[cui-areatype="toolbar"] > #downloads-indicator-anchor > #downloads-indicator-icon {
-  background: var(--downloads-indicator-icon) center no-repeat;
-  width: 18px;
-  height: 18px;
-  background-size: 18px;
-}
-
-toolbar[brighttext] #downloads-button[cui-areatype="toolbar"]:not([attention="success"]) > #downloads-indicator-anchor > #downloads-indicator-icon {
-  background-image: var(--downloads-indicator-icon-inverted);
-}
-
-#downloads-button[attention="warning"] > .toolbarbutton-badge-stack > .toolbarbutton-badge,
-#downloads-button[attention="severe"] > .toolbarbutton-badge-stack > .toolbarbutton-badge {
-  display: -moz-box;
-  height: 8px;
-  width: 8px;
-  min-width: 0;
-  border-radius: 50%;
-  /* "!important" is necessary to override the rule in toolbarbutton.css */
-  margin-top: -1px !important;
-  margin-right: -2px !important;
-}
-
-#downloads-button[cui-areatype="toolbar"] > .toolbarbutton-badge-stack > .toolbarbutton-badge {
-  height: 7px;
-  width: 7px;
-}
-
-#downloads-button[attention="severe"] > .toolbarbutton-badge-stack > .toolbarbutton-badge {
-  background: #D90000;
-}
-
-#downloads-button[attention="warning"] > .toolbarbutton-badge-stack > .toolbarbutton-badge {
-  background: #FFBF00;
-}
-
-#downloads-button[cui-areatype="toolbar"][attention="severe"] > .toolbarbutton-badge-stack > .toolbarbutton-badge:-moz-window-inactive,
-#downloads-button[cui-areatype="toolbar"][attention="warning"] > .toolbarbutton-badge-stack > .toolbarbutton-badge:-moz-window-inactive {
-  filter: none;
-}
-
-#downloads-button[cui-areatype="toolbar"][attention="success"] > #downloads-indicator-anchor > #downloads-indicator-icon {
-  background-image: var(--downloads-indicator-icon-attention);
-}
-
-toolbar[brighttext] #downloads-button[cui-areatype="toolbar"][attention="success"] > #downloads-indicator-anchor > #downloads-indicator-icon {
-  background-image: var(--downloads-indicator-icon-attention-inverted);
-}
-
-#downloads-button[cui-areatype="menu-panel"][attention="success"] {
-  list-style-image: url("chrome://browser/skin/downloads/download-glow-menuPanel.png");
-  -moz-image-region: auto;
-}
-
-/* In the next few rules, we use :not([counter]) as a shortcut that is
-   equivalent to -moz-any([progress], [paused]). */
-
-#downloads-button:not([counter]) > #downloads-indicator-anchor > #downloads-indicator-progress-area > #downloads-indicator-counter {
-  background: var(--downloads-indicator-icon) center no-repeat;
-  background-size: 12px;
-}
-
-toolbar[brighttext] #downloads-button:not([counter]):not([attention="success"]) > #downloads-indicator-anchor > #downloads-button-progress-area > #downloads-indicator-counter {
-  background-image: var(--downloads-indicator-icon-inverted);
-}
-
-#downloads-button:not([counter])[attention="success"] > #downloads-indicator-anchor > #downloads-indicator-progress-area > #downloads-indicator-counter {
-  background-image: var(--downloads-indicator-icon-attention);
-}
-
-toolbar[brighttext] #downloads-button:not([counter])[attention="success"] > #downloads-indicator-anchor > #downloads-indicator-progress-area > #downloads-indicator-counter {
-  background-image: var(--downloads-indicator-icon-attention-inverted);
-}
-
-/*** Download notifications ***/
-
-#downloads-indicator-notification {
-  opacity: 0;
-  background-size: 16px;
-  background-position: center;
-  background-repeat: no-repeat;
-  width: 16px;
-  height: 16px;
-}
-
-@keyframes downloadsIndicatorNotificationStartRight {
-  from { opacity: 0; transform: translate(-128px, 128px) scale(8); }
-  20%  { opacity: .85; animation-timing-function: ease-out; }
-  to   { opacity: 0; transform: translate(0) scale(1); }
-}
-
-@keyframes downloadsIndicatorNotificationStartLeft {
-  from { opacity: 0; transform: translate(128px, 128px) scale(8); }
-  20%  { opacity: .85; animation-timing-function: ease-out; }
-  to   { opacity: 0; transform: translate(0) scale(1); }
-}
-
-#downloads-notification-anchor[notification="start"] > #downloads-indicator-notification {
-  background-image: url("chrome://browser/skin/downloads/download-notification-start.png");
-  animation-name: downloadsIndicatorNotificationStartRight;
-  animation-duration: 1s;
-}
-
-#downloads-notification-anchor[notification="start"]:-moz-locale-dir(rtl) > #downloads-indicator-notification {
-  animation-name: downloadsIndicatorNotificationStartLeft;
-}
-
-@keyframes downloadsIndicatorNotificationFinish {
-  from { opacity: 0; transform: scale(1); }
-  20%  { opacity: .65; animation-timing-function: ease-in; }
-  to   { opacity: 0; transform: scale(8); }
-}
-
-#downloads-notification-anchor[notification="finish"] > #downloads-indicator-notification {
-  background-image: url("chrome://browser/skin/downloads/download-notification-finish.png");
-  animation-name: downloadsIndicatorNotificationFinish;
-  animation-duration: 1s;
-}
-
-/*** Progress bar and text ***/
-
-#downloads-indicator-counter {
-  height: 10px;
-  margin: 0;
-  color: hsl(0,0%,30%);
-  text-shadow: 0 1px 0 hsla(0,0%,100%,.5);
-  font-size: 10px;
-  line-height: 10px;
-  text-align: center;
-}
-
-toolbar[brighttext] #downloads-indicator-counter {
-  color: white;
-  text-shadow: 0 0 1px rgba(0,0,0,.7),
-               0 1px 1.5px rgba(0,0,0,.5);
-}
-
-#downloads-indicator-progress {
-  width: 18px;
-  height: 6px;
-  min-width: 0;
-  min-height: 0;
-  margin-top: 1px;
-  margin-bottom: 2px;
-  border-radius: 2px;
-  box-shadow: 0 1px 0 hsla(0,0%,100%,.4);
-}
-
-#downloads-indicator-progress > .progress-bar {
-  -moz-appearance: none;
-  min-width: 0;
-  min-height: 0;
-  /* The background-clip: border-box; and background-image: none; are there to expand the background-color behind the border */
-  background-clip: padding-box, border-box;
-  background-color: rgb(255, 135, 94);
-  background-image: linear-gradient(transparent 1px, rgba(255, 255, 255, 0.4) 1px, rgba(255, 255, 255, 0.4) 2px, transparent 2px), none;
-  border: 1px solid;
-  border-color: rgba(0,43,86,.6) rgba(0,43,86,.4) rgba(0,43,86,.4);
-  border-radius: 2px 0 0 2px;
-}
-
-#downloads-indicator-progress > .progress-remainder {
-  -moz-appearance: none;
-  min-width: 0;
-  min-height: 0;
-  background-image: linear-gradient(#505050, #575757);
-  border: 1px solid;
-  border-color: hsla(0,0%,0%,.6) hsla(0,0%,0%,.4) hsla(0,0%,0%,.4);
-  border-inline-start: none;
-  border-radius: 0 2px 2px 0;
-}
-
-#downloads-button[paused] > #downloads-indicator-anchor > #downloads-indicator-progress-area > #downloads-indicator-progress > .progress-bar {
-  background-color: rgb(220, 230, 81);
-}
-
-#downloads-button[paused] > #downloads-indicator-anchor > #downloads-indicator-progress-area > #downloads-indicator-progress > .progress-remainder {
-  background-image: linear-gradient(#4b5000, #515700);
-}
diff --git a/browser/themes/linux/feeds/feedIcon.png b/browser/themes/linux/feeds/feedIcon.png
deleted file mode 100644
index a788fffb0..000000000
--- a/browser/themes/linux/feeds/feedIcon.png
+++ /dev/null
diff --git a/browser/themes/linux/feeds/feedIcon16.png b/browser/themes/linux/feeds/feedIcon16.png
deleted file mode 100644
index f8536a4e1..000000000
--- a/browser/themes/linux/feeds/feedIcon16.png
+++ /dev/null
diff --git a/browser/themes/linux/feeds/subscribe-ui.css b/browser/themes/linux/feeds/subscribe-ui.css
deleted file mode 100644
index f1650036e..000000000
--- a/browser/themes/linux/feeds/subscribe-ui.css
+++ /dev/null
@@ -1,7 +0,0 @@
-/* This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
-
-.alwaysUse {
-  padding: 5px;
-}
diff --git a/browser/themes/linux/feeds/subscribe.css b/browser/themes/linux/feeds/subscribe.css
deleted file mode 100644
index a9b59d2e1..000000000
--- a/browser/themes/linux/feeds/subscribe.css
+++ /dev/null
@@ -1,185 +0,0 @@
-/* This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
-
-html {
-  background: -moz-Dialog;
-  font: 3mm tahoma,arial,helvetica,sans-serif;
-}
-
-#subscribeUsingDescription,
-#subscribeButton {
-  display: block;
-}
-
-#subscribeUsingDescription {
-  margin-bottom: 0.5em;
-}
-
-#subscribeButton {
-  margin-top: 0.5em;
-  margin-inline-start: auto;
-}
-
-#feedBody {
-  border: 1px solid THreeDShadow;
-  padding: 3em;
-  padding-inline-start: 30px;
-  margin: 2em auto;
-  background: -moz-Field;
-}
-
-#feedHeaderContainer {
-  border: 1px solid ThreeDShadow;
-  border-radius: 10px;
-  margin: -4em auto 0 auto;
-  background-color: InfoBackground;
-  -moz-appearance: -moz-gtk-info-bar;
-  display: flex;
-}
-
-#feedHeaderContainerSpacer {
-  flex-grow: 1;
-}
-
-#feedHeader {
-  margin-top: 4.9em;
-  margin-bottom: 1em;
-  margin-inline-start: 1.4em;
-  margin-inline-end: 1em;
-  padding-inline-start: 2.9em;
-  font-size: 110%;
-  color: -moz-gtk-info-bar-text;
-}
-
-.feedBackground {
-  background: url("chrome://browser/skin/feeds/feedIcon.png") 0% 10% no-repeat;
-}
-
-.videoPodcastBackground {
-  background: url("chrome://browser/skin/feeds/videoFeedIcon.png") 0% 10% no-repeat;
-}
-
-.audioPodcastBackground {
-  background: url("chrome://browser/skin/feeds/audioFeedIcon.png") 0% 10% no-repeat;
-}
-
-#feedHeader[dir="rtl"] {
-  background-position: 100% 10%;
-}
-
-#feedIntroText {
-  display: none;
-}
-
-#feedHeader[firstrun="true"] #feedIntroText {
-  padding-top: 0.1em;
-  padding-inline-start: 0.6em;
-  display: block;
-}
-
-#feedHeader[firstrun="true"] > #feedSubscribeLine {
-  padding-inline-start: 1.8em;
-}
-
-#feedSubscribeLine {
-  padding-top: 0.2em;
-  padding-inline-start: 0.5em;
-}
-
-/* Don't print subscription UI */
-@media print {
-  #feedHeaderContainer {
-    display: none;
-  }
-}
-
-body {
-  margin: 0;
-  padding: 0 3em;
-  color: -moz-fieldText;
-  font: message-box;
-}
-
-h1 {
-  font-size: 160%;
-  border-bottom: 2px solid ThreeDLightShadow;
-  margin: 0 0 .2em 0;
-}
-
-h2 {
-  color: GrayText;
-  font-size: 110%;
-  font-weight: normal;
-  margin: 0 0 .6em 0;
-}
-
-#feedTitleLink {
-  float: right;
-  margin-inline-start: .6em;
-  margin-inline-end: 0;
-  margin-top: 0;
-  margin-bottom: 0;
-}
-
-a[href] img {
-  border: none;
-}
-
-#feedTitleContainer {
-  margin-inline-start: 0;
-  margin-inline-end: .6em;
-  margin-top: 0;
-  margin-bottom: 0;
-}
-
-#feedTitleImage {
-  margin-inline-start: .6em;
-  margin-inline-end: 0;
-  margin-top: 0;
-  margin-bottom: 0;
-  max-width: 300px;
-  max-height: 150px;
-}
-
-.feedEntryContent {
-  font-size: 110%;
-}
- 
-.link {
-  color: #0000FF;
-  text-decoration: underline;
-  cursor: pointer;
-}
-
-.link:hover:active {
-  color: #FF0000;
-}
-
-.lastUpdated {
-  font-size: 85%;
-  font-weight: normal;
-}
-
-.type-icon {
-  vertical-align: bottom;
-  height: 16px;
-  width: 16px;
-}
-
-.enclosures {
-  border: 1px solid THreeDShadow;
-  padding: 1em;
-  margin: 1em auto;
-  background: -moz-Dialog;
-}
-
-.enclosure {
-  vertical-align: middle;
-  margin-left: 2px;
-}
-
-.handlersMenuList > .menulist-label-box > .menulist-icon {
-  max-width: 16px;
-  max-height: 16px;
-}
diff --git a/browser/themes/linux/jar.mn b/browser/themes/linux/jar.mn
deleted file mode 100644
index 189027812..000000000
--- a/browser/themes/linux/jar.mn
+++ /dev/null
@@ -1,133 +0,0 @@
-# This Source Code Form is subject to the terms of the Mozilla Public
-# License, v. 2.0. If a copy of the MPL was not distributed with this
-# file, You can obtain one at http://mozilla.org/MPL/2.0/.
-
-browser.jar:
-% skin browser classic/1.0 %skin/classic/browser/
-% override chrome://global/skin/icons/warning-16.png moz-icon://stock/gtk-dialog-warning?size=menu
-#include ../shared/jar.inc.mn
-  skin/classic/browser/sanitizeDialog.css
-  skin/classic/browser/aboutSessionRestore-window-icon.png
-  skin/classic/browser/aboutSyncTabs.css
-* skin/classic/browser/syncedtabs/sidebar.css     (syncedtabs/sidebar.css)
-  skin/classic/browser/actionicon-tab.png
-* skin/classic/browser/browser.css
-* skin/classic/browser/devedition.css
-* skin/classic/browser/browser-lightweightTheme.css
-  skin/classic/browser/click-to-play-warning-stripes.png
-  skin/classic/browser/Info.png
-  skin/classic/browser/menuPanel-customize.png
-  skin/classic/browser/menuPanel-customize@2x.png
-  skin/classic/browser/menuPanel-exit.png
-  skin/classic/browser/menuPanel-exit@2x.png
-  skin/classic/browser/menuPanel-help.png
-  skin/classic/browser/menuPanel-help@2x.png
-  skin/classic/browser/monitor.png
-  skin/classic/browser/monitor_16-10.png
-* skin/classic/browser/pageInfo.css
-  skin/classic/browser/pageInfo.png
-  skin/classic/browser/page-livemarks.png
-  skin/classic/browser/Privacy-16.png
-  skin/classic/browser/privatebrowsing-mask.png
-  skin/classic/browser/reload-stop-go.png
-  skin/classic/browser/reload-stop-go@2x.png
-  skin/classic/browser/searchbar.css
-  skin/classic/browser/Security-broken.png
-  skin/classic/browser/setDesktopBackground.css
-  skin/classic/browser/slowStartup-16.png
-  skin/classic/browser/Toolbar.png
-  skin/classic/browser/Toolbar@2x.png
-  skin/classic/browser/Toolbar-inverted.png
-  skin/classic/browser/Toolbar-inverted@2x.png
-  skin/classic/browser/Toolbar-small.png
-  skin/classic/browser/webRTC-indicator.css
-* skin/classic/browser/controlcenter/panel.css        (controlcenter/panel.css)
-  skin/classic/browser/customizableui/background-noise-toolbar.png  (customizableui/background-noise-toolbar.png)
-  skin/classic/browser/customizableui/customizeMode-gridTexture.png  (customizableui/customizeMode-gridTexture.png)
-  skin/classic/browser/customizableui/customizeMode-separatorHorizontal.png  (customizableui/customizeMode-separatorHorizontal.png)
-  skin/classic/browser/customizableui/customizeMode-separatorVertical.png  (customizableui/customizeMode-separatorVertical.png)
-* skin/classic/browser/customizableui/panelUI.css (customizableui/panelUI.css)
-* skin/classic/browser/downloads/allDownloadsViewOverlay.css   (downloads/allDownloadsViewOverlay.css)
-  skin/classic/browser/downloads/download-glow-menuPanel.png (downloads/download-glow-menuPanel.png)
-  skin/classic/browser/downloads/download-notification-finish.png (downloads/download-notification-finish.png)
-  skin/classic/browser/downloads/download-notification-start.png (downloads/download-notification-start.png)
-* skin/classic/browser/downloads/downloads.css        (downloads/downloads.css)
-  skin/classic/browser/feeds/feedIcon.png             (feeds/feedIcon.png)
-  skin/classic/browser/feeds/feedIcon16.png           (feeds/feedIcon16.png)
-  skin/classic/browser/feeds/subscribe.css            (feeds/subscribe.css)
-  skin/classic/browser/feeds/subscribe-ui.css         (feeds/subscribe-ui.css)
-* skin/classic/browser/newtab/newTab.css              (newtab/newTab.css)
-  skin/classic/browser/places/autocomplete-star.png   (places/autocomplete-star.png)
-  skin/classic/browser/places/bookmarksMenu.png       (places/bookmarksMenu.png)
-  skin/classic/browser/places/bookmarksToolbar.png    (places/bookmarksToolbar.png)
-  skin/classic/browser/places/bookmarksToolbar-menuPanel.png (places/bookmarksToolbar-menuPanel.png)
-  skin/classic/browser/places/bookmarks-notification-finish.png  (places/bookmarks-notification-finish.png)
-  skin/classic/browser/places/bookmarks-menu-arrow.png           (places/bookmarks-menu-arrow.png)
-  skin/classic/browser/places/calendar.png            (places/calendar.png)
-* skin/classic/browser/places/editBookmarkOverlay.css (places/editBookmarkOverlay.css)
-  skin/classic/browser/places/livemark-item.png       (places/livemark-item.png)
-  skin/classic/browser/places/starred48.png           (places/starred48.png)
-  skin/classic/browser/places/unstarred48.png         (places/unstarred48.png)
-  skin/classic/browser/places/places.css              (places/places.css)
-  skin/classic/browser/places/organizer.css           (places/organizer.css)
-  skin/classic/browser/places/organizer.xml           (places/organizer.xml)
-  skin/classic/browser/places/query.png               (places/query.png)
-  skin/classic/browser/places/tag.png                 (places/tag.png)
-  skin/classic/browser/places/toolbarDropMarker.png   (places/toolbarDropMarker.png)
-  skin/classic/browser/places/unsortedBookmarks.png   (places/unsortedBookmarks.png)
-  skin/classic/browser/places/downloads.png           (places/downloads.png)
-  skin/classic/browser/preferences/alwaysAsk.png      (preferences/alwaysAsk.png)
-  skin/classic/browser/preferences/preferences.css    (preferences/preferences.css)
-* skin/classic/browser/preferences/in-content/preferences.css (preferences/in-content/preferences.css)
-* skin/classic/browser/preferences/in-content/dialog.css      (preferences/in-content/dialog.css)
-  skin/classic/browser/preferences/applications.css   (preferences/applications.css)
-  skin/classic/browser/tabbrowser/alltabs.png         (tabbrowser/alltabs.png)
-  skin/classic/browser/tabbrowser/alltabs-inverted.png (tabbrowser/alltabs-inverted.png)
-  skin/classic/browser/tabbrowser/newtab.svg                (tabbrowser/newtab.svg)
-  skin/classic/browser/tabbrowser/newtab-inverted.svg       (tabbrowser/newtab-inverted.svg)
-  skin/classic/browser/tabbrowser/tab-active-middle.png     (tabbrowser/tab-active-middle.png)
-  skin/classic/browser/tabbrowser/tab-active-middle@2x.png  (tabbrowser/tab-active-middle@2x.png)
-  skin/classic/browser/tabbrowser/tab-arrow-left.png        (tabbrowser/tab-arrow-left.png)
-  skin/classic/browser/tabbrowser/tab-arrow-left-inverted.png (tabbrowser/tab-arrow-left-inverted.png)
-  skin/classic/browser/tabbrowser/tab-background-end.png    (tabbrowser/tab-background-end.png)
-  skin/classic/browser/tabbrowser/tab-background-end@2x.png (tabbrowser/tab-background-end@2x.png)
-  skin/classic/browser/tabbrowser/tab-background-middle.png    (tabbrowser/tab-background-middle.png)
-  skin/classic/browser/tabbrowser/tab-background-middle@2x.png (tabbrowser/tab-background-middle@2x.png)
-  skin/classic/browser/tabbrowser/tab-background-start.png     (tabbrowser/tab-background-start.png)
-  skin/classic/browser/tabbrowser/tab-background-start@2x.png  (tabbrowser/tab-background-start@2x.png)
-
-# NOTE: The following two files (tab-selected-end.svg, tab-selected-start.svg) get pre-processed in
-#       Makefile.in with a non-default marker of "%" and the result of that gets packaged.
-  skin/classic/browser/tabbrowser/tab-selected-end.svg      (tab-selected-end.svg)
-  skin/classic/browser/tabbrowser/tab-selected-start.svg    (tab-selected-start.svg)
-
-  skin/classic/browser/tabbrowser/tab-stroke-end.png        (tabbrowser/tab-stroke-end.png)
-  skin/classic/browser/tabbrowser/tab-stroke-end@2x.png     (tabbrowser/tab-stroke-end@2x.png)
-  skin/classic/browser/tabbrowser/tab-stroke-start.png      (tabbrowser/tab-stroke-start.png)
-  skin/classic/browser/tabbrowser/tab-stroke-start@2x.png   (tabbrowser/tab-stroke-start@2x.png)
-  skin/classic/browser/tabbrowser/tabDragIndicator.png      (tabbrowser/tabDragIndicator.png)
-
-  skin/classic/browser/sync-16.png
-  skin/classic/browser/sync-32.png
-  skin/classic/browser/sync-bg.png
-  skin/classic/browser/sync-128.png
-  skin/classic/browser/sync-desktopIcon.svg  (../shared/sync-desktopIcon.svg)
-  skin/classic/browser/sync-horizontalbar.png
-  skin/classic/browser/sync-horizontalbar@2x.png
-  skin/classic/browser/sync-mobileIcon.svg  (../shared/sync-mobileIcon.svg)
-  skin/classic/browser/sync-notification-24.png
-  skin/classic/browser/syncProgress-menuPanel.png
-  skin/classic/browser/syncProgress-menuPanel@2x.png
-  skin/classic/browser/syncProgress-toolbar.png
-  skin/classic/browser/syncProgress-toolbar-inverted.png
-  skin/classic/browser/syncSetup.css
-  skin/classic/browser/syncCommon.css
-  skin/classic/browser/syncQuota.css
-  skin/classic/browser/syncProgress-horizontalbar.png
-  skin/classic/browser/syncProgress-horizontalbar@2x.png
-
-[extensions/{972ce4c6-7e08-4474-a285-3208198ce6fd}] chrome.jar:
-% override chrome://browser/skin/feeds/audioFeedIcon.png              chrome://browser/skin/feeds/feedIcon.png
-% override chrome://browser/skin/feeds/audioFeedIcon16.png            chrome://browser/skin/feeds/feedIcon16.png
-% override chrome://browser/skin/feeds/videoFeedIcon.png              chrome://browser/skin/feeds/feedIcon.png
-% override chrome://browser/skin/feeds/videoFeedIcon16.png            chrome://browser/skin/feeds/feedIcon16.png
diff --git a/browser/themes/linux/linuxShared.inc b/browser/themes/linux/linuxShared.inc
deleted file mode 100644
index 80f88ae73..000000000
--- a/browser/themes/linux/linuxShared.inc
+++ /dev/null
@@ -1,13 +0,0 @@
-/* This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
-
-%filter substitution
-
-%define toolbarHighlight hsla(0,0%,100%,.15)
-%define toolbarHighlightLWT rgba(255,255,255,.4)
-/* navbarInsetHighlight is tightly coupled to the toolbarHighlight constant. */
-%define navbarInsetHighlight hsla(0,0%,100%,.4)
-%define fgTabTexture linear-gradient(transparent 2px, @toolbarHighlight@ 2px, @toolbarHighlight@)
-%define fgTabTextureLWT linear-gradient(transparent 2px, @toolbarHighlightLWT@ 2px, @toolbarHighlightLWT@)
-%define fgTabBackgroundColor -moz-dialog
diff --git a/browser/themes/linux/menuPanel-customize.png b/browser/themes/linux/menuPanel-customize.png
deleted file mode 100644
index e0b0a70a3..000000000
--- a/browser/themes/linux/menuPanel-customize.png
+++ /dev/null
diff --git a/browser/themes/linux/menuPanel-customize@2x.png b/browser/themes/linux/menuPanel-customize@2x.png
deleted file mode 100644
index 5ce3b766a..000000000
--- a/browser/themes/linux/menuPanel-customize@2x.png
+++ /dev/null
diff --git a/browser/themes/linux/menuPanel-exit.png b/browser/themes/linux/menuPanel-exit.png
deleted file mode 100644
index 8daaffe95..000000000
--- a/browser/themes/linux/menuPanel-exit.png
+++ /dev/null
diff --git a/browser/themes/linux/menuPanel-exit@2x.png b/browser/themes/linux/menuPanel-exit@2x.png
deleted file mode 100644
index d48426546..000000000
--- a/browser/themes/linux/menuPanel-exit@2x.png
+++ /dev/null
diff --git a/browser/themes/linux/menuPanel-help.png b/browser/themes/linux/menuPanel-help.png
deleted file mode 100644
index 962001ff6..000000000
--- a/browser/themes/linux/menuPanel-help.png
+++ /dev/null
diff --git a/browser/themes/linux/menuPanel-help@2x.png b/browser/themes/linux/menuPanel-help@2x.png
deleted file mode 100644
index b8f0a80fa..000000000
--- a/browser/themes/linux/menuPanel-help@2x.png
+++ /dev/null
diff --git a/browser/themes/linux/monitor.png b/browser/themes/linux/monitor.png
deleted file mode 100644
index 35e7b2056..000000000
--- a/browser/themes/linux/monitor.png
+++ /dev/null
diff --git a/browser/themes/linux/monitor_16-10.png b/browser/themes/linux/monitor_16-10.png
deleted file mode 100644
index 41950340e..000000000
--- a/browser/themes/linux/monitor_16-10.png
+++ /dev/null
diff --git a/browser/themes/linux/moz.build b/browser/themes/linux/moz.build
deleted file mode 100644
index 8b611040d..000000000
--- a/browser/themes/linux/moz.build
+++ /dev/null
@@ -1,11 +0,0 @@
-# -*- Mode: python; indent-tabs-mode: nil; tab-width: 40 -*-
-# vim: set filetype=python:
-# This Source Code Form is subject to the terms of the Mozilla Public
-# License, v. 2.0. If a copy of the MPL was not distributed with this
-# file, You can obtain one at http://mozilla.org/MPL/2.0/.
-
-DIRS += ['communicator']
-
-JAR_MANIFESTS += ['jar.mn']
-
-include('../tab-svgs.mozbuild')
diff --git a/browser/themes/linux/newtab/newTab.css b/browser/themes/linux/newtab/newTab.css
deleted file mode 100644
index 371594f06..000000000
--- a/browser/themes/linux/newtab/newTab.css
+++ /dev/null
@@ -1,19 +0,0 @@
-/* This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
-
-%include ../../shared/newtab/newTab.inc.css
-
-
-.newtab-undo-button {
-  color: rgb(221,72,20);
-}
-
-#newtab-undo-close-button {
-  height: 16px;
-  width: 16px;
-}
-
-.newtab-title {
-  font-family: sans-serif;
-}
diff --git a/browser/themes/linux/page-livemarks.png b/browser/themes/linux/page-livemarks.png
deleted file mode 100644
index c3b534e04..000000000
--- a/browser/themes/linux/page-livemarks.png
+++ /dev/null
diff --git a/browser/themes/linux/pageInfo.css b/browser/themes/linux/pageInfo.css
deleted file mode 100644
index 6cf37a7c9..000000000
--- a/browser/themes/linux/pageInfo.css
+++ /dev/null
@@ -1,267 +0,0 @@
-%if 0
-/* This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
-%endif
-
-@import url("chrome://global/skin/");
-
-/* View buttons */
-#viewGroup > radio {
-  list-style-image: url("chrome://browser/skin/pageInfo.png");
-  -moz-box-orient: vertical;
-  -moz-box-align: center;
-  -moz-appearance: none;
-  min-width: 4.5em;
-  margin: 0;
-  padding: 3px;
-  color: -moz-FieldText;
-}
-
-#viewGroup > radio[selected="true"] {
-  background-color: Highlight;
-  color: HighlightText;
-}
-
-#topBar {
-  -moz-appearance: listbox;
-  margin: 8px 8px 0;
-}
-
-#generalTab {
-  -moz-image-region: rect(0px, 32px, 32px, 0px)
-}
-
-#mediaTab {
-  -moz-image-region: rect(0px, 64px, 32px, 32px)
-}
-
-#feedTab {
-  -moz-image-region: rect(0px, 96px, 32px, 64px)
-}
-
-#permTab {
-  -moz-image-region: rect(0px, 128px, 32px, 96px)
-}
-
-#securityTab {
-  -moz-image-region: rect(0px, 160px, 32px, 128px)
-}
-
-#mainDeck {
-  padding-left: 2px;
-  padding-right: 2px;
-}
-
-deck {
-  padding: 10px 10px 10px 10px;
-}
-
-/* Misc */
-tree {
-  margin: .5em;
-}
-
-.gridSeparator {
-  width: .5em;
-}
-
-textbox {
-  background: transparent !important;
-  border: none;
-  padding: 0px;
-  margin-top: 1px;
-  -moz-appearance: none;
-}
-
-textbox.header {
-  margin-inline-start: 0;
-}
-
-.iframe {
-  margin: .5em;
-  background: white;
-  overflow: auto;
-}
-
-.fixedsize {
-  height: 8.5em;
-}
-
-textbox[disabled] {
-  font-style: italic;
-}
-
-/* General Tab */
-#generalPanel > #titletext {
-  margin-inline-start: 5px;
-}
-
-groupbox.collapsable caption .caption-icon {
-  width: 9px;
-  height: 9px;
-  background-repeat: no-repeat;
-  background-position: center;
-  margin-inline-start: 1px;
-  margin-inline-end: 3px;
-  background-image: url("chrome://global/skin/tree/twisty-open.png");
-}
-
-groupbox.collapsable[closed="true"] {
-  border: none;
-}
-
-groupbox.collapsable[closed="true"] caption .caption-icon {
-  background-image: url("chrome://global/skin/tree/twisty-clsd.png");
-}
-
-groupbox tree {
-  margin: 0;
-  border: none;
-}
-
-groupbox.treebox .groupbox-body {
-  margin-inline-start: 5px;
-  margin-inline-end: 1px;
-  padding-top: 0;
-}
-
-#securityBox description {
-  margin-inline-start: 10px;
-}
-
-#general-security-identity {
-  white-space: pre-wrap;
-  line-height: 2em;
-}
-
-/* Media Tab */
-#imagetree {
-  min-height: 10em;
-  margin-top: 2px;
-  margin-bottom: 0;
-}
-
-#mediaSplitter {
-  -moz-appearance: none;
-  height: .8em;
-}
-
-#mediaGrid {
-  min-height: 9em;
-}
-
-#mediaLabelColumn {
-  min-width: 10em;
-}
-
-#thepreviewimage {
-  margin: 1em;
-}
-
-treechildren::-moz-tree-cell-text(broken) {
-  font-style: italic;
-  color: graytext;
-}
-
-#mediaPreviewBox .inset {
-  -moz-appearance: listbox;
-  margin-bottom: 0;
-}
-
-/* Feeds Tab */
-#feedPanel {
-  margin-left: 2px;
-  margin-right: 2px;
-}
-
-#feedtree {
-  margin-bottom: 0px;
-}
-
-#feedListbox richlistitem {
-  padding-top: 6px;
-  padding-bottom: 6px;
-  padding-inline-start: 7px;
-  padding-inline-end: 7px;
-  min-height: 25px;
-  border-bottom: 1px dotted #C0C0C0;
-  color: -moz-FieldText;
-}
-
-#feedListbox richlistitem[selected="true"] {
-  background-color: -moz-Dialog;
-  color: -moz-DialogText;
-}
-
-#feedListbox {
-  margin-bottom: 0;
-  border: 2px solid;
-  -moz-border-top-colors: ThreeDShadow ThreeDDarkShadow;
-  -moz-border-right-colors: ThreeDHighlight ThreeDLightShadow;
-  -moz-border-bottom-colors: ThreeDHighlight ThreeDLightShadow;
-  -moz-border-left-colors: ThreeDShadow ThreeDDarkShadow;
-}
-
-.feedTitle {
-  font-weight: bold;
-}
-
-/* Permissions Tab */
-#permPanel {
-  margin-left: 6px;
-  margin-right: 6px;
-}
-
-#permList {
-  -moz-appearance: listbox;
-  margin-top: .5em;
-  overflow: auto;
-  border: 2px solid;
-  -moz-border-top-colors: ThreeDShadow ThreeDDarkShadow;
-  -moz-border-right-colors: ThreeDHighlight ThreeDLightShadow;
-  -moz-border-bottom-colors: ThreeDHighlight ThreeDLightShadow;
-  -moz-border-left-colors: ThreeDShadow ThreeDDarkShadow;
-  background-color: -moz-field;
-  color: -moz-FieldText;
-}
-
-.permission {
-  padding-top: 6px;
-  padding-bottom: 6px;
-  padding-inline-start: 7px;
-  padding-inline-end: 7px;
-  min-height: 25px;
-  border-bottom: 1px dotted #C0C0C0;
-}
-
-.permissionLabel {
-  font-weight: bold;
-}
-
-.permission:hover {
-  background-color: -moz-dialog;
-  color: -moz-DialogText;
-}
-
-/* Security Tab */
-#securityPanel .caption-icon {
-  display: none;
-}
-
-#securityPanel .header {
-  font-size: 120%;
-}
-
-#securityPanel .fieldLabel {
-  margin: 2px 10px 3px;
-}
-
-#securityPanel .fieldValue {
-  font-weight: bold;
-  margin: 2px 10px 3px;
-}
-
-#securityPanel row {
-  -moz-box-align: center;
-}
diff --git a/browser/themes/linux/pageInfo.png b/browser/themes/linux/pageInfo.png
deleted file mode 100644
index 2cbb15df9..000000000
--- a/browser/themes/linux/pageInfo.png
+++ /dev/null
diff --git a/browser/themes/linux/places/autocomplete-star.png b/browser/themes/linux/places/autocomplete-star.png
deleted file mode 100644
index 2675f9345..000000000
--- a/browser/themes/linux/places/autocomplete-star.png
+++ /dev/null
diff --git a/browser/themes/linux/places/bookmarks-menu-arrow.png b/browser/themes/linux/places/bookmarks-menu-arrow.png
deleted file mode 100644
index 616f16b7f..000000000
--- a/browser/themes/linux/places/bookmarks-menu-arrow.png
+++ /dev/null
diff --git a/browser/themes/linux/places/bookmarks-notification-finish.png b/browser/themes/linux/places/bookmarks-notification-finish.png
deleted file mode 100644
index 8520b4985..000000000
--- a/browser/themes/linux/places/bookmarks-notification-finish.png
+++ /dev/null
diff --git a/browser/themes/linux/places/bookmarksMenu.png b/browser/themes/linux/places/bookmarksMenu.png
deleted file mode 100644
index 80dd2168d..000000000
--- a/browser/themes/linux/places/bookmarksMenu.png
+++ /dev/null
diff --git a/browser/themes/linux/places/bookmarksToolbar-menuPanel.png b/browser/themes/linux/places/bookmarksToolbar-menuPanel.png
deleted file mode 100644
index 367a9090d..000000000
--- a/browser/themes/linux/places/bookmarksToolbar-menuPanel.png
+++ /dev/null
diff --git a/browser/themes/linux/places/bookmarksToolbar.png b/browser/themes/linux/places/bookmarksToolbar.png
deleted file mode 100644
index 09502fe83..000000000
--- a/browser/themes/linux/places/bookmarksToolbar.png
+++ /dev/null
diff --git a/browser/themes/linux/places/calendar.png b/browser/themes/linux/places/calendar.png
deleted file mode 100644
index f7128685c..000000000
--- a/browser/themes/linux/places/calendar.png
+++ /dev/null
diff --git a/browser/themes/linux/places/downloads.png b/browser/themes/linux/places/downloads.png
deleted file mode 100644
index d641714aa..000000000
--- a/browser/themes/linux/places/downloads.png
+++ /dev/null
diff --git a/browser/themes/linux/places/editBookmarkOverlay.css b/browser/themes/linux/places/editBookmarkOverlay.css
deleted file mode 100644
index dba6ba655..000000000
--- a/browser/themes/linux/places/editBookmarkOverlay.css
+++ /dev/null
@@ -1,71 +0,0 @@
-%if 0
-/* This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
-%endif
-/**** folder menulist ****/
-.folder-icon > .menulist-label-box > .menulist-icon {
-  width: 16px;
-  height: 16px;
-}
-
-.folder-icon > .menu-iconic-left {
-  display: -moz-box;
-}
-
-.folder-icon {
-  list-style-image: url("moz-icon://stock/gtk-directory?size=menu") !important;
-}
-
-
-/**** expanders ****/
-
-.expander-up,
-.expander-down {
-  min-width: 0;
-  padding: 2px 0;
-  padding-inline-start: 2px;
-}
-
-.expander-up > .button-box {
-  -moz-appearance: button-arrow-up;
-}
-
-.expander-down > .button-box {
-  -moz-appearance: button-arrow-down;
-}
-
-#editBookmarkPanelContent {
-  min-width: 23em;
-}
-
-#editBMPanel_folderTree {
-  margin-top: 2px;
-  margin-bottom: 2px;
-}
-
-/* Hide the value column of the tag autocomplete popup
- * leaving only the comment column visible. This is
- * so that only the tag being edited is shown in the
- * popup.
- */
-#editBMPanel_tagsField #treecolAutoCompleteValue {
-  visibility: collapse;
-}
-
-
-/* Bookmark panel dropdown menu items */
-#editBMPanel_folderMenuList[selectedIndex="0"],
-#editBMPanel_toolbarFolderItem {
-  list-style-image: url("chrome://browser/skin/places/bookmarksToolbar.png") !important;  
-}
-
-#editBMPanel_folderMenuList[selectedIndex="1"],
-#editBMPanel_bmRootItem {
-  list-style-image: url("chrome://browser/skin/places/bookmarksMenu.png") !important;  
-}
-
-#editBMPanel_folderMenuList[selectedIndex="2"],
-#editBMPanel_unfiledRootItem {
-  list-style-image: url("chrome://browser/skin/places/unsortedBookmarks.png") !important;  
-}
diff --git a/browser/themes/linux/places/livemark-item.png b/browser/themes/linux/places/livemark-item.png
deleted file mode 100644
index 9184b9518..000000000
--- a/browser/themes/linux/places/livemark-item.png
+++ /dev/null
diff --git a/browser/themes/linux/places/organizer.css b/browser/themes/linux/places/organizer.css
deleted file mode 100644
index d1881dbb4..000000000
--- a/browser/themes/linux/places/organizer.css
+++ /dev/null
@@ -1,103 +0,0 @@
-/* This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
-
-
-/* Toolbar */
-#placesToolbar {
-  -moz-appearance: menubar;
-}
-
-#placesToolbar:-moz-system-metric(menubar-drag) {
-  -moz-binding: url("chrome://global/content/bindings/toolbar.xml#toolbar-drag");
-}
-
-#placesToolbar > toolbarbutton {
-  color: -moz-menubartext;
-}
-
-#placesToolbar > toolbarbutton:hover {
-  color: ButtonText;
-}
-
-#placesToolbar > toolbarbutton[disabled=true] {
-  color: GrayText;
-}
-
-/* back button */
-
-#back-button {
-  list-style-image: url("moz-icon://stock/gtk-go-back-ltr?size=toolbar");
-}
-#back-button[disabled="true"] {
-  list-style-image: url("moz-icon://stock/gtk-go-back-ltr?size=toolbar&state=disabled");
-}
-
-#back-button:-moz-locale-dir(rtl) {
-  list-style-image: url("moz-icon://stock/gtk-go-back-rtl?size=toolbar");
-}
-#back-button[disabled="true"]:-moz-locale-dir(rtl) {
-  list-style-image: url("moz-icon://stock/gtk-go-back-rtl?size=toolbar&state=disabled");
-}
-
-/* forward button */
-
-#forward-button {
-  list-style-image: url("moz-icon://stock/gtk-go-forward-ltr?size=toolbar");
-}
-#forward-button[disabled="true"] {
-  list-style-image: url("moz-icon://stock/gtk-go-forward-ltr?size=toolbar&state=disabled");
-}
-
-#forward-button:-moz-locale-dir(rtl) {
-  list-style-image: url("moz-icon://stock/gtk-go-forward-rtl?size=toolbar");
-}
-#forward-button[disabled="true"]:-moz-locale-dir(rtl) {
-  list-style-image: url("moz-icon://stock/gtk-go-forward-rtl?size=toolbar&state=disabled");
-}
-
-/* Menu */
-#placesMenu {
-  -moz-appearance: none;
-  border: none;
-}
-
-#placesMenu > menu {
-  padding-inline-start: 4px;
-  -moz-binding: url("chrome://browser/skin/places/organizer.xml#toolbarbutton-dropdown");
-  -moz-appearance: toolbarbutton;
-}
-
-#placesMenu > menu:active,
-#placesMenu > menu:hover,
-#placesMenu > menu[open] {
-  color: ButtonText;
-}
-
-#placesMenu > menu > .menubar-right {
-  -moz-appearance: toolbarbutton-dropdown;
-  width: 12px;
-  height: 12px;
-}
-
-/* Root View */
-#placesView {
-  background-color: Window;
-}
-
-/* Info box */
-#detailsDeck {
-  padding: 5px;
-}
-
-#infoBoxExpanderLabel {
-  padding-inline-start: 2px;
-}
-
-/**
- * Downloads pane
- */
-
-#clearDownloadsButton > .toolbarbutton-icon {
-  display: none;
-}
diff --git a/browser/themes/linux/places/organizer.xml b/browser/themes/linux/places/organizer.xml
deleted file mode 100644
index 8331ebb11..000000000
--- a/browser/themes/linux/places/organizer.xml
+++ /dev/null
@@ -1,21 +0,0 @@
-<?xml version="1.0"?>
-
-<!-- This Source Code Form is subject to the terms of the Mozilla Public
-   - License, v. 2.0. If a copy of the MPL was not distributed with this
-   - file, You can obtain one at http://mozilla.org/MPL/2.0/. -->
-
-<bindings id="organizerBindings"
-          xmlns="http://www.mozilla.org/xbl"
-          xmlns:xul="http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul"
-          xmlns:xbl="http://www.mozilla.org/xbl">
-
-  <binding id="toolbarbutton-dropdown"
-           extends="chrome://global/content/bindings/menu.xml#menu-base">
-    <content>
-      <xul:image class="menubar-left" xbl:inherits="src=image"/>
-      <xul:label class="menubar-text" xbl:inherits="value=label,accesskey,crop" crop="right"/>
-      <xul:hbox class="menubar-right"/>
-      <children includes="menupopup"/>
-    </content>
-  </binding>
-</bindings>
diff --git a/browser/themes/linux/places/places.css b/browser/themes/linux/places/places.css
deleted file mode 100644
index 776191dd5..000000000
--- a/browser/themes/linux/places/places.css
+++ /dev/null
@@ -1,122 +0,0 @@
-/* This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
-
-/* Sidebars */
-.sidebar-placesTree {
-  margin: 0;
-}
-
-.sidebar-placesTreechildren::-moz-tree-cell(leaf) ,
-.sidebar-placesTreechildren::-moz-tree-image(leaf) {
-  cursor: pointer;
-}
-
-.sidebar-placesTreechildren::-moz-tree-cell-text(leaf, hover) {
-  cursor: pointer;
-  text-decoration: underline;
-}
-
-.sidebar-placesTreechildren::-moz-tree-cell(separator) {
-  cursor: default;
-}
-
-/* Trees */
-treechildren::-moz-tree-image(title) {
-  padding-right: 2px;
-  margin: 0px 2px;
-  width: 16px;
-  height: 16px;
-  list-style-image: url("chrome://mozapps/skin/places/defaultFavicon.png");
-}
-
-treechildren::-moz-tree-image(title, livemarkItem) {
-  list-style-image: url("chrome://browser/skin/places/livemark-item.png");
-  -moz-image-region: rect(0px, 16px, 16px, 0px);
-}
-
-treechildren::-moz-tree-image(title, livemarkItem, visited) {
-  -moz-image-region: rect(0px, 32px, 16px, 16px);
-}
-
-treechildren::-moz-tree-image(title, separator) {
-  list-style-image: none;
-  width: 0;
-  height: 0;
-}
-
-treechildren::-moz-tree-image(title, container) {
-  list-style-image: url("moz-icon://stock/gtk-directory?size=menu");
-}
-
-treechildren::-moz-tree-image(title, container, livemark) {
-  list-style-image: url("chrome://browser/skin/feeds/feedIcon16.png");
-  -moz-image-region: auto;
-}
-
-treechildren::-moz-tree-image(container, OrganizerQuery_AllBookmarks) {
-  list-style-image: url("chrome://browser/skin/Toolbar-small.png");
-  -moz-image-region: rect(0px 48px 16px 32px);
-}
-
-treechildren::-moz-tree-image(container, OrganizerQuery_BookmarksToolbar) {
-  list-style-image: url("chrome://browser/skin/places/bookmarksToolbar.png");
-  -moz-image-region: auto;
-}
-
-treechildren::-moz-tree-image(container, OrganizerQuery_BookmarksMenu) {
-  list-style-image: url("chrome://browser/skin/places/bookmarksMenu.png");
-  -moz-image-region: auto;
-}
-
-treechildren::-moz-tree-image(container, OrganizerQuery_UnfiledBookmarks) {
-  list-style-image: url("chrome://browser/skin/places/unsortedBookmarks.png");
-  -moz-image-region: auto;
-}
-
-/* query-nodes should be styled even if they're not expandable */
-treechildren::-moz-tree-image(title, query) {
-  list-style-image: url("chrome://browser/skin/places/query.png");
-}
-
-treechildren::-moz-tree-image(query, OrganizerQuery_Downloads) {
-  list-style-image: url("chrome://browser/skin/places/downloads.png");
-  -moz-image-region: auto;
-}
-
-treechildren::-moz-tree-image(title, query, tagContainer),
-treechildren::-moz-tree-image(query, OrganizerQuery_Tags) {
-  list-style-image: url("chrome://browser/skin/places/tag.png");
-}
-
-/* calendar icon for folders grouping items by date */
-treechildren::-moz-tree-image(title, query, dayContainer) {
-  list-style-image: url("chrome://browser/skin/places/calendar.png");
-}
-
-treechildren::-moz-tree-image(title, query, hostContainer) {
-  list-style-image: url("moz-icon://stock/gtk-directory?size=menu");
-}
-
-treechildren::-moz-tree-image(title, query, hostContainer, open) {
-  list-style-image: url("moz-icon://stock/gtk-directory?size=menu");
-}
-
-treechildren::-moz-tree-image(title, query, OrganizerQuery_History) {
-  list-style-image: url("chrome://browser/skin/Toolbar-small.png");
-  -moz-image-region: rect(0px 32px 16px 16px);
-}
-
-/* We want some queries to look like ordinary folders. This must come
-   after the (title, query) selector, or it would get overridden. */
-treechildren::-moz-tree-image(title, query, folder) {
-  list-style-image: url("moz-icon://stock/gtk-directory?size=menu");
-}
-
-treechildren::-moz-tree-image(cutting) {
-  opacity: 0.5;
-}
-
-treechildren::-moz-tree-cell-text(cutting) {
-  opacity: 0.7;
-}
diff --git a/browser/themes/linux/places/query.png b/browser/themes/linux/places/query.png
deleted file mode 100644
index 2420dee0e..000000000
--- a/browser/themes/linux/places/query.png
+++ /dev/null
diff --git a/browser/themes/linux/places/starred48.png b/browser/themes/linux/places/starred48.png
deleted file mode 100644
index bdcc7e757..000000000
--- a/browser/themes/linux/places/starred48.png
+++ /dev/null
diff --git a/browser/themes/linux/places/tag.png b/browser/themes/linux/places/tag.png
deleted file mode 100644
index 27176cc6d..000000000
--- a/browser/themes/linux/places/tag.png
+++ /dev/null
diff --git a/browser/themes/linux/places/toolbarDropMarker.png b/browser/themes/linux/places/toolbarDropMarker.png
deleted file mode 100644
index ed3200f6c..000000000
--- a/browser/themes/linux/places/toolbarDropMarker.png
+++ /dev/null
diff --git a/browser/themes/linux/places/unsortedBookmarks.png b/browser/themes/linux/places/unsortedBookmarks.png
deleted file mode 100644
index 4dcf76138..000000000
--- a/browser/themes/linux/places/unsortedBookmarks.png
+++ /dev/null
diff --git a/browser/themes/linux/places/unstarred48.png b/browser/themes/linux/places/unstarred48.png
deleted file mode 100644
index 15448636e..000000000
--- a/browser/themes/linux/places/unstarred48.png
+++ /dev/null
diff --git a/browser/themes/linux/preferences/alwaysAsk.png b/browser/themes/linux/preferences/alwaysAsk.png
deleted file mode 100644
index 45256d4e7..000000000
--- a/browser/themes/linux/preferences/alwaysAsk.png
+++ /dev/null
diff --git a/browser/themes/linux/preferences/applications.css b/browser/themes/linux/preferences/applications.css
deleted file mode 100644
index 508076304..000000000
--- a/browser/themes/linux/preferences/applications.css
+++ /dev/null
@@ -1,66 +0,0 @@
-/* This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
-
-/**
- * Line up the actions menu with action labels above and below it.
- * Equalize the distance from the left side of the action box to the left side
- * of the icon for both the menu and the non-menu versions of the action box.
- * Also make sure the labels are the same distance away from the icons.
- */
-.actionsMenu {
-  margin-top: -1px;
-  margin-bottom: -1px;
-  margin-inline-start: -1px;
-  margin-inline-end: 0;
-}
-
-.typeIcon,
-.actionIcon {
-  margin-inline-start: 3px;
-  margin-inline-end: 3px;
-}
-
-#handlersView > richlistitem label {
-  margin-inline-start: 1px;
-  margin-top: 2px;
-}
-
-#handlersView > richlistitem {
-  min-height: 25px;
-}
-
-richlistitem[appHandlerIcon="ask"],
-menuitem[appHandlerIcon="ask"] {
-  list-style-image: url("chrome://browser/skin/preferences/alwaysAsk.png");
-}
-
-richlistitem[appHandlerIcon="save"],
-menuitem[appHandlerIcon="save"] {
-  list-style-image: url("moz-icon://stock/gtk-save?size=menu");
-}
-
-richlistitem[appHandlerIcon="feed"],
-menuitem[appHandlerIcon="feed"] {
-  list-style-image: url("chrome://browser/skin/page-livemarks.png");
-}
-
-richlistitem[appHandlerIcon="plugin"],
-menuitem[appHandlerIcon="plugin"] {
-  list-style-image: url("chrome://mozapps/skin/plugins/pluginGeneric-16.png");
-}
-
-.actionsMenu .menulist-icon {
-  margin-inline-end: 1px;
-  height: 16px;
-  width: 16px;
-}
-
-.actionsMenu > menupopup > menuitem > .menu-iconic-left {
-  padding-inline-start: 0;
-  padding-inline-end: 4px !important;
-}
-
-.actionsMenu > menupopup > menuitem {
-  padding-inline-start: 3px;
-}
diff --git a/browser/themes/linux/preferences/in-content/dialog.css b/browser/themes/linux/preferences/in-content/dialog.css
deleted file mode 100644
index 3b1ae45e0..000000000
--- a/browser/themes/linux/preferences/in-content/dialog.css
+++ /dev/null
@@ -1,19 +0,0 @@
-/* - This Source Code Form is subject to the terms of the Mozilla Public
-   - License, v. 2.0. If a copy of the MPL was not distributed with this file,
-   - You can obtain one at http://mozilla.org/MPL/2.0/. */
-
-%include ../../../shared/incontentprefs/dialog.inc.css
-
-label:not(.menu-text),
-textbox,
-description,
-.tab-text,
-caption > label {
-  font-size: 1.2em;
-}
-
-/* Create a separate rule to unset these styles on .tree-input instead of
-   using :not(.tree-input) so the selector specifity doesn't change. */
-textbox.tree-input {
-  font-size: unset;
-}
diff --git a/browser/themes/linux/preferences/in-content/preferences.css b/browser/themes/linux/preferences/in-content/preferences.css
deleted file mode 100644
index 91997aa0d..000000000
--- a/browser/themes/linux/preferences/in-content/preferences.css
+++ /dev/null
@@ -1,48 +0,0 @@
-/* - This Source Code Form is subject to the terms of the Mozilla Public
-   - License, v. 2.0. If a copy of the MPL was not distributed with this file,
-   - You can obtain one at http://mozilla.org/MPL/2.0/. */
-
-%include ../../../shared/incontentprefs/preferences.inc.css
-
-.treecol-sortdirection {
-  /* override the Linux only toolkit rule */
-  -moz-appearance: none;
-}
-
-.actionsMenu {
-  font-family: "Clear Sans", sans-serif;
-  font-size: 1.25rem;
-  line-height: 22px;
-}
-
-.actionsMenu > .menulist-label-box > .menulist-icon {
-  margin-top: 1px;
-  margin-inline-start: 1px;
-  margin-inline-end: 6px;
-}
-
-.actionsMenu > .menulist-label-box > .menulist-label {
-  margin-top: 2px !important;
-}
-
-#fxaProfileImage {
-  -moz-user-focus: normal;
-}
-
-menulist.actionsMenu > .menulist-dropmarker {
-  margin-top: 11px;
-  margin-bottom: 11px;
-}
-
-textbox + button,
-filefield + button {
-  margin-inline-start: -4px;
-}
-
-/**
- * Dialog
- */
-
-#dialogTitle {
-  font-size: 1em;
-}
diff --git a/browser/themes/linux/preferences/mail.png b/browser/themes/linux/preferences/mail.png
deleted file mode 100644
index 66d2bc9e0..000000000
--- a/browser/themes/linux/preferences/mail.png
+++ /dev/null
diff --git a/browser/themes/linux/preferences/preferences.css b/browser/themes/linux/preferences/preferences.css
deleted file mode 100644
index 45e2dc23d..000000000
--- a/browser/themes/linux/preferences/preferences.css
+++ /dev/null
@@ -1,106 +0,0 @@
-/*
-# -*- Mode: Java; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*-
-# This Source Code Form is subject to the terms of the Mozilla Public
-# License, v. 2.0. If a copy of the MPL was not distributed with this
-# file, You can obtain one at http://mozilla.org/MPL/2.0/.
-*/
-
-/* Global Styles */
-.checkbox-check {
-  -moz-appearance: checkbox;
-}
-
-/* General Pane */
-#useFirefoxSync,
-#getStarted {
-  font-size: 90%;
-}
-
-#isNotDefaultLabel {
-  font-weight: bold;
-}
-
-/* Content Pane */
-#translationAttributionImage {
-  width: 70px;
-  cursor: pointer;
-}
-
-/* Modeless Window Dialogs */
-.windowDialog,
-.windowDialog prefpane {
-  padding: 0px;
-}
-
-.contentPane {
-  margin: 9px 8px 5px 8px;
-}
-
-.actionButtons {
-  margin: 0px 3px 6px 3px !important;
-}
-
-/* Cookies Manager */
-#cookiesChildren::-moz-tree-image(domainCol) {
-  width: 16px;
-  height: 16px;
-  margin: 0px 2px;
-  list-style-image: url("chrome://mozapps/skin/places/defaultFavicon.png");
-}
-
-#linksOpenInBox {
-  margin-top: 5px;
-}
-
-#advancedPrefs {
-  margin-left: 0;
-  margin-right: 0; 
-}
-
-#cookiesChildren::-moz-tree-image(domainCol, container) {
-  list-style-image: url("moz-icon://stock/gtk-directory?size=menu");
-}
-
-#cookieInfoBox {
-  border: 1px solid ThreeDShadow;
-  border-radius: 0px;
-  margin: 4px;
-  padding: 0px;
-}
-
-/* bottom-most box containing a groupbox in a prefpane. Prevents the bottom
-   of the groupbox from being cutoff */
-.bottomBox {
-  padding-bottom: 4px;
-}
-
-/**
- * Clear Private Data
- */
-#SanitizeDialogPane > groupbox {
-  margin-top: 0;
-}
-
-/* Sync Pane */
-
-#syncDesc {
-  padding: 0 8em;
-}
-
-#accountCaptionImage {
-  list-style-image: url("chrome://mozapps/skin/profile/profileicon.png");
-}
-
-#syncAddDeviceLabel {
-  margin-top: 1em;
-  margin-bottom: 1em;
-}
-
-#noFxaAccount {
-  margin: 5px;
-  line-height: 1.2em;
-}
-
-#noFxaAccount > label:first-child {
-  margin-bottom: 0.6em;
-}
diff --git a/browser/themes/linux/privatebrowsing-mask.png b/browser/themes/linux/privatebrowsing-mask.png
deleted file mode 100644
index 9eaf3aec7..000000000
--- a/browser/themes/linux/privatebrowsing-mask.png
+++ /dev/null
diff --git a/browser/themes/linux/reload-stop-go.png b/browser/themes/linux/reload-stop-go.png
deleted file mode 100644
index 1017be903..000000000
--- a/browser/themes/linux/reload-stop-go.png
+++ /dev/null
diff --git a/browser/themes/linux/reload-stop-go@2x.png b/browser/themes/linux/reload-stop-go@2x.png
deleted file mode 100644
index 38b27bf0c..000000000
--- a/browser/themes/linux/reload-stop-go@2x.png
+++ /dev/null
diff --git a/browser/themes/linux/sanitizeDialog.css b/browser/themes/linux/sanitizeDialog.css
deleted file mode 100644
index e73cd27e7..000000000
--- a/browser/themes/linux/sanitizeDialog.css
+++ /dev/null
@@ -1,107 +0,0 @@
-/* This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
-
-#sanitizeDurationChoice {
-  margin-inline-end: 0;
-}
-
-/* Align the duration label with the warning box and item list */
-#sanitizeDurationLabel {
-  margin-inline-start: 3px;
-}
-
-
-/* Hide the duration dropdown suffix label if it's empty.  Otherwise it
-   takes up a little space, causing the end of the dropdown to not be aligned
-   with the warning box. */
-#sanitizeDurationSuffixLabel[value=""] {
-  display: none;
-}
-
-
-/* Places tree */
-#placesTreechildren::-moz-tree-row(selected),
-#placesTreechildren::-moz-tree-row(grippyRow) {
-  background: #999;
-}
-
-#placesTreechildren::-moz-tree-cell-text(selected) {
-  color: #111;
-}
-
-
-/* Sanitize everything warning box */
-#sanitizeEverythingWarningBox {
-  background-color: Window;
-  border: 1px solid ThreeDDarkShadow;
-  border-radius: 5px;
-  padding: 16px;
-}
-
-#sanitizeEverythingWarningIcon {
-  list-style-image: url("moz-icon://stock/gtk-dialog-warning?size=dialog");
-  padding: 0;
-  margin: 0;
-}
-
-#sanitizeEverythingWarningDescBox {
-  padding: 0 16px;
-  margin: 0;
-}
-
-
-/* Progressive disclosure button */
-#detailsExpanderWrapper {
-  padding: 0;
-  margin-top: 6px;
-  margin-bottom: 6px;
-  margin-inline-start: -4px;
-  margin-inline-end: 0;
-}
-
-.expander-up,
-.expander-down {
-  min-width: 0;
-  padding: 2px 0;
-  padding-inline-start: 2px;
-}
-
-.expander-up {
-  list-style-image: url("chrome://global/skin/arrow/arrow-up.gif");
-}
-
-.expander-down {
-  list-style-image: url("chrome://global/skin/arrow/arrow-dn.gif");
-}
-
-.expander-down:hover:active {
-  list-style-image: url("chrome://global/skin/arrow/arrow-dn-hov.gif");
-}
-
-.expander-up:hover:active {
-  list-style-image: url("chrome://global/skin/arrow/arrow-up-hov.gif");
-}
-
-
-/* Make the item list the same width as the warning box */
-#itemList {
-  margin-inline-start: 0;
-  margin-inline-end: 0;
-}
-
-/* Without this a useless scrollbar appears in the listbox when its rows
-   attribute is set to the total number of listitems, as it is currently.  See
-   bug 489958 comment 14 and bug 491788. */
-#itemList > listitem {
-  padding: 1px 0;
-}
-
-
-/* Align the last dialog button with the end of the warning box */
-.prefWindow-dlgbuttons {
-  margin-inline-end: 0;
-}
-.dialog-button[dlgtype="accept"] {
-  margin-inline-end: 0;
-}
diff --git a/browser/themes/linux/searchbar.css b/browser/themes/linux/searchbar.css
deleted file mode 100644
index cb4103db0..000000000
--- a/browser/themes/linux/searchbar.css
+++ /dev/null
@@ -1,336 +0,0 @@
-/* This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
-
-#PopupSearchAutoComplete {
-  /* JS code forces the panel to have the width of the searchbar rather than
-   * the width of the textfield. Alignment of the panel with the searchbar is
-   * obtained with negative margins here: margin-inline-start when the text
-   * field is in the same direction as the rest of the UI, margin-inline-end
-   * when the textfield's direction has been reversed.
-   * (eg. using ctrl+shift+X) */
-  margin-inline-start: -23px;
-  margin-inline-end: -16px;
-}
-
-.autocomplete-textbox-container {
-  -moz-box-align: stretch;
-}
-
-.textbox-input-box {
-  margin: 0;
-}
-
-/* Engine button */
-.searchbar-engine-image {
-  height: 16px;
-  width: 16px;
-  list-style-image: url("chrome://mozapps/skin/places/defaultFavicon.png");
-  margin-inline-start: -1px;
-}
-
-/* Search go button */
-.search-go-container {
-  -moz-box-align: center;
-}
-
-.search-go-button {
-  padding: 1px;
-  list-style-image: url("chrome://browser/skin/reload-stop-go.png");
-  -moz-image-region: rect(0, 42px, 14px, 28px);
-  width: 14px;
-}
-
-.search-go-button:hover {
-  -moz-image-region: rect(14px, 42px, 28px, 28px);
-}
-
-.search-go-button:hover:active {
-  -moz-image-region: rect(28px, 42px, 42px, 28px);
-}
-
-.search-go-button:-moz-locale-dir(rtl) {
-  transform: scaleX(-1);
-}
-
-menuitem[cmd="cmd_clearhistory"] {
-  list-style-image: url("moz-icon://stock/gtk-clear?size=menu");
-}
-
-menuitem[cmd="cmd_clearhistory"][disabled] {
-  list-style-image: url("moz-icon://stock/gtk-clear?size=menu&state=disabled");
-}
-
-.searchbar-search-button-container {
-  -moz-box-align: center;
-}
-
-.searchbar-search-button {
-  list-style-image: url("chrome://browser/skin/search-indicator.png");
-  -moz-image-region: rect(0, 20px, 20px, 0);
-  margin-top: 1px;
-  margin-bottom: 1px;
-  margin-inline-start: 2px;
-  width: 20px;
-}
-
-.searchbar-search-button[addengines="true"] {
-  list-style-image: url("chrome://browser/skin/search-indicator-badge-add.png");
-}
-
-.searchbar-search-button:hover {
-  -moz-image-region: rect(0, 40px, 20px, 20px);
-}
-
-.searchbar-search-button:hover:active {
-  -moz-image-region: rect(0, 60px, 20px, 40px);
-}
-
-@media (min-resolution: 1.1dppx) {
-  .searchbar-engine-image {
-    list-style-image: url("chrome://mozapps/skin/places/defaultFavicon@2x.png");
-  }
-
-  .searchbar-search-button {
-    list-style-image: url("chrome://browser/skin/search-indicator@2x.png");
-    -moz-image-region: rect(0, 40px, 40px, 0);
-  }
-
-  .searchbar-search-button[addengines="true"] {
-    list-style-image: url("chrome://browser/skin/search-indicator-badge-add@2x.png");
-  }
-
-  .searchbar-search-button:hover {
-    -moz-image-region: rect(0, 80px, 40px, 40px);
-  }
-
-  .searchbar-search-button:hover:active {
-    -moz-image-region: rect(0, 120px, 40px, 80px);
-  }
-
-  .search-go-button {
-    list-style-image: url("chrome://browser/skin/reload-stop-go@2x.png");
-    -moz-image-region: rect(0, 84px, 28px, 56px);
-  }
-
-  .search-go-button:hover {
-    -moz-image-region: rect(28px, 84px, 56px, 56px);
-  }
-
-  .search-go-button:hover:active {
-    -moz-image-region: rect(56px, 84px, 84px, 56px);
-  }
-}
-
-.search-panel-current-engine {
-  -moz-box-align: center;
-}
-
-/**
- * The borders of the various elements are specified as follows.
- *
- * The current engine always has a bottom border.
- * The search results never have a border.
- *
- * When the search results are not collapsed:
- * - The elements underneath the search results all have a top border.
- *
- * When the search results are collapsed:
- * - The elements underneath the search results all have a bottom border, except
- *   the lowest one: search-setting-button.
- */
-
-.search-panel-current-engine {
-  border-top: none !important;
-  border-bottom: 1px solid var(--panel-separator-color) !important;
-}
-
-.search-panel-tree[collapsed=true] + .search-one-offs > .search-panel-header,
-.search-panel-tree[collapsed=true] + .search-one-offs > .search-panel-one-offs,
-.search-panel-tree[collapsed=true] + .search-one-offs > vbox > .addengine-item:first-of-type {
-  border-top: none !important;
-}
-
-.search-panel-tree[collapsed=true] + .search-one-offs > .searchbar-engine-one-off-item,
-.search-panel-tree[collapsed=true] + .search-one-offs > .search-panel-current-input,
-.search-panel-tree[collapsed=true] + .search-one-offs > .search-panel-one-offs,
-.search-panel-tree[collapsed=true] + .search-one-offs > vbox > .addengine-item:last-of-type {
-  border-bottom: 1px solid var(--panel-separator-color) !important;
-}
-
-.search-panel-header {
-  font-weight: normal;
-  background-color: var(--arrowpanel-dimmed);
-  border: none;
-  border-top: 1px solid var(--panel-separator-color);
-  padding: 3px 5px;
-  color: GrayText;
-}
-
-.search-panel-header > label {
-  margin-top: 2px !important;
-  margin-bottom: 1px !important;
-}
-
-.search-panel-current-input > label {
-  margin: 2px 0 1px !important;
-}
-
-.search-panel-input-value {
-  color: -moz-fieldtext;
-}
-
-.search-panel-one-offs {
-  margin: 0 !important;
-  border-top: 1px solid var(--panel-separator-color);
-}
-
-.searchbar-engine-one-off-item {
-  -moz-appearance: none;
-  display: inline-block;
-  border: none;
-  min-width: 48px;
-  height: 32px;
-  margin: 0;
-  padding: 0;
-  background: linear-gradient(transparent 15%, var(--panel-separator-color) 15%, var(--panel-separator-color) 85%, transparent 85%);
-  background-size: 1px auto;
-  background-repeat: no-repeat;
-  background-position: right center;
-  color: GrayText;
-}
-
-.searchbar-engine-one-off-item:-moz-locale-dir(rtl) {
-  background-position: left center;
-}
-
-.searchbar-engine-one-off-item:not(.last-row) {
-  box-sizing: content-box;
-  border-bottom: 1px solid var(--panel-separator-color);
-}
-
-.search-setting-button-compact {
-  border-bottom: none !important;
-}
-
-.search-panel-one-offs:not([compact=true]) > .searchbar-engine-one-off-item.last-of-row,
-.search-panel-one-offs[compact=true] > .searchbar-engine-one-off-item.last-of-row:not(.dummy),
-.search-panel-one-offs[compact=true] > .searchbar-engine-one-off-item.dummy:not(.last-of-row),
-.search-panel-one-offs[compact=true] > .searchbar-engine-one-off-item.last-engine,
-.search-setting-button-compact {
-  background-image: none;
-}
-
-.searchbar-engine-one-off-item[selected] {
-  background-color: Highlight;
-  background-image: none;
-  color: HighlightText;
-}
-
-.searchbar-engine-one-off-item > .button-box {
-  border: none;
-  padding: 0;
-}
-
-.searchbar-engine-one-off-item > .button-box > .button-text {
-  display: none;
-}
-
-.searchbar-engine-one-off-item > .button-box > .button-icon {
-  display: -moz-box;
-  margin-inline-end: 0;
-  width: 16px;
-  height: 16px;
-}
-
-.addengine-item {
-  -moz-appearance: none;
-  background-color: transparent;
-  color: inherit;
-  border: none;
-  height: 32px;
-  margin: 0;
-  padding: 0 10px;
-}
-
-.addengine-item > .button-box {
-  -moz-box-pack: start;
-}
-
-.addengine-item:first-of-type {
-  border-top: 1px solid var(--panel-separator-color);
-}
-
-.addengine-item[selected] {
-  background-color: Highlight;
-  color: HighlightText;
-}
-
-.addengine-icon {
-  width: 16px;
-}
-
-.addengine-badge {
-  width: 16px;
-  height: 16px;
-  margin: -7px -9px 7px 9px;
-  list-style-image: url("chrome://browser/skin/badge-add-engine.png");
-}
-
-.addengine-item > .button-box > .button-text {
-  -moz-box-flex: 1;
-  text-align: start;
-  padding-inline-start: 10px;
-}
-
-.addengine-item:not([image]) {
-  list-style-image: url("chrome://browser/skin/search-engine-placeholder.png");
-}
-
-@media (min-resolution: 1.1dppx) {
-  .addengine-badge {
-    list-style-image: url("chrome://browser/skin/badge-add-engine@2x.png");
-  }
-
-  .addengine-item:not([image]) {
-    list-style-image: url("chrome://browser/skin/search-engine-placeholder@2x.png");
-  }
-}
-
-.search-panel-tree > .autocomplete-treebody::-moz-tree-cell {
-  border-top: none !important;
-}
-
-.search-panel-tree > .autocomplete-treebody::-moz-tree-cell-text {
-  padding-inline-start: 4px;
-}
-
-.search-panel-tree > .autocomplete-treebody::-moz-tree-image {
-  padding-inline-start: 5px;
-  width: 14px;
-  height: 14px;
-}
-
-.search-panel-tree > .autocomplete-treebody::-moz-tree-image(fromhistory) {
-  list-style-image: url("chrome://browser/skin/search-history-icon.svg#search-history-icon");
-}
-
-.search-panel-tree > .autocomplete-treebody::-moz-tree-image(fromhistory, selected) {
-  list-style-image: url("chrome://browser/skin/search-history-icon.svg#search-history-icon-active");
-}
-
-.search-setting-button {
-  -moz-appearance: none;
-  margin: 0;
-  min-height: 32px;
-}
-
-.search-setting-button[selected] {
-  background-color: var(--arrowpanel-dimmed-further);
-}
-
-.search-setting-button-compact > .button-box > .button-icon {
-  list-style-image: url("chrome://browser/skin/gear.svg");
-  filter: url(chrome://browser/skin/filters.svg#fill);
-  fill: currentColor;
-}
diff --git a/browser/themes/linux/setDesktopBackground.css b/browser/themes/linux/setDesktopBackground.css
deleted file mode 100644
index 585284c7b..000000000
--- a/browser/themes/linux/setDesktopBackground.css
+++ /dev/null
@@ -1,18 +0,0 @@
-/* This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
-
-@namespace url("http://www.mozilla.org/keymaster/gatekeeper/there.is.only.xul");
-@namespace html url("http://www.w3.org/1999/xhtml");
-
-html|canvas#screen {
-  margin: 12px 11px 32px;
-}
-
-#monitor {
-  list-style-image: url("chrome://browser/skin/monitor.png");
-}
-
-#monitor[aspectratio="16:10"] {
-  list-style-image: url("chrome://browser/skin/monitor_16-10.png");
-}
diff --git a/browser/themes/linux/slowStartup-16.png b/browser/themes/linux/slowStartup-16.png
deleted file mode 100644
index 834dc0f1c..000000000
--- a/browser/themes/linux/slowStartup-16.png
+++ /dev/null
diff --git a/browser/themes/linux/sync-128.png b/browser/themes/linux/sync-128.png
deleted file mode 100644
index 1ea34818c..000000000
--- a/browser/themes/linux/sync-128.png
+++ /dev/null
diff --git a/browser/themes/linux/sync-16.png b/browser/themes/linux/sync-16.png
deleted file mode 100644
index 0afb1c719..000000000
--- a/browser/themes/linux/sync-16.png
+++ /dev/null
diff --git a/browser/themes/linux/sync-32.png b/browser/themes/linux/sync-32.png
deleted file mode 100644
index 7a762cb98..000000000
--- a/browser/themes/linux/sync-32.png
+++ /dev/null
diff --git a/browser/themes/linux/sync-bg.png b/browser/themes/linux/sync-bg.png
deleted file mode 100644
index 893a27d76..000000000
--- a/browser/themes/linux/sync-bg.png
+++ /dev/null
diff --git a/browser/themes/linux/sync-horizontalbar.png b/browser/themes/linux/sync-horizontalbar.png
deleted file mode 100644
index 824d4691b..000000000
--- a/browser/themes/linux/sync-horizontalbar.png
+++ /dev/null
diff --git a/browser/themes/linux/sync-horizontalbar@2x.png b/browser/themes/linux/sync-horizontalbar@2x.png
deleted file mode 100644
index fadb57586..000000000
--- a/browser/themes/linux/sync-horizontalbar@2x.png
+++ /dev/null
diff --git a/browser/themes/linux/sync-notification-24.png b/browser/themes/linux/sync-notification-24.png
deleted file mode 100644
index d67eb47ac..000000000
--- a/browser/themes/linux/sync-notification-24.png
+++ /dev/null
diff --git a/browser/themes/linux/syncCommon.css b/browser/themes/linux/syncCommon.css
deleted file mode 100644
index 1378c9c40..000000000
--- a/browser/themes/linux/syncCommon.css
+++ /dev/null
@@ -1,49 +0,0 @@
-/* This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
-
-/* The following are used by both sync/setup.xul and sync/genericChange.xul */
-.status {
-  color: -moz-dialogtext;
-}
-
-.statusIcon {
-  margin-inline-start: 4px;
-  max-height: 16px;
-  max-width: 16px;
-}
-
-.statusIcon[status="active"] {
-  list-style-image: url("chrome://global/skin/icons/loading.png");
-}
-
-.statusIcon[status="error"] {
-  list-style-image: url("moz-icon://stock/gtk-dialog-error?size=menu");
-}
-
-.statusIcon[status="success"] {
-  list-style-image: url("moz-icon://stock/gtk-dialog-info?size=menu");
-}
-
-/* .data is only used by sync/genericChange.xul, but it seems unnecessary to have
-   a separate stylesheet for it. */
-.data {
-  font-size: 90%;
-  font-weight: bold;
-}
-
-dialog#change-dialog {
-  width: 40em;
-}
-
-image#syncIcon {
-  list-style-image: url("chrome://browser/skin/sync-32.png");
-}
-
-#introText {
-  margin-top: 2px;
-}
-
-#feedback {
-  height: 2em;
-}
diff --git a/browser/themes/linux/syncProgress-horizontalbar.png b/browser/themes/linux/syncProgress-horizontalbar.png
deleted file mode 100644
index 48cd11055..000000000
--- a/browser/themes/linux/syncProgress-horizontalbar.png
+++ /dev/null
diff --git a/browser/themes/linux/syncProgress-horizontalbar@2x.png b/browser/themes/linux/syncProgress-horizontalbar@2x.png
deleted file mode 100644
index e1de4763d..000000000
--- a/browser/themes/linux/syncProgress-horizontalbar@2x.png
+++ /dev/null
diff --git a/browser/themes/linux/syncProgress-menuPanel.png b/browser/themes/linux/syncProgress-menuPanel.png
deleted file mode 100644
index 6fd6f9c16..000000000
--- a/browser/themes/linux/syncProgress-menuPanel.png
+++ /dev/null
diff --git a/browser/themes/linux/syncProgress-menuPanel@2x.png b/browser/themes/linux/syncProgress-menuPanel@2x.png
deleted file mode 100644
index 04b2cae00..000000000
--- a/browser/themes/linux/syncProgress-menuPanel@2x.png
+++ /dev/null
diff --git a/browser/themes/linux/syncProgress-toolbar-inverted.png b/browser/themes/linux/syncProgress-toolbar-inverted.png
deleted file mode 100644
index 4ede4387d..000000000
--- a/browser/themes/linux/syncProgress-toolbar-inverted.png
+++ /dev/null
diff --git a/browser/themes/linux/syncProgress-toolbar.png b/browser/themes/linux/syncProgress-toolbar.png
deleted file mode 100644
index 49e224f0d..000000000
--- a/browser/themes/linux/syncProgress-toolbar.png
+++ /dev/null
diff --git a/browser/themes/linux/syncQuota.css b/browser/themes/linux/syncQuota.css
deleted file mode 100644
index 1577de8a3..000000000
--- a/browser/themes/linux/syncQuota.css
+++ /dev/null
@@ -1,26 +0,0 @@
-/* This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
-
-#quotaDialog {
-  width: 33em;
-  height: 25em;
-}
-
-treechildren::-moz-tree-checkbox {
-  list-style-image: none;
-}
-treechildren::-moz-tree-checkbox(checked) {
-  list-style-image: url("chrome://global/skin/checkbox/cbox-check.gif");
-}
-treechildren::-moz-tree-checkbox(disabled) {
-  list-style-image: url("chrome://global/skin/checkbox/cbox-check-dis.gif");
-}
-
-#treeCaption {
-  height: 4em;
-}
-
-.captionWarning {
-  font-weight: bold;
-}
diff --git a/browser/themes/linux/syncSetup.css b/browser/themes/linux/syncSetup.css
deleted file mode 100644
index 1c79e2f50..000000000
--- a/browser/themes/linux/syncSetup.css
+++ /dev/null
@@ -1,133 +0,0 @@
-/* This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
-
-wizard {
-  -moz-appearance: none;
-  width: 55em;
-  height: 45em;
-  padding: 0;
-  background-color: Window;
-}
-
-.wizard-page-box {
-  -moz-appearance: none;
-  padding-left: 0;
-  padding-right: 0;
-  margin: 0;
-}
-
-wizardpage {
-  -moz-box-pack: center;
-  -moz-box-align: center;
-  margin: 0;
-  padding: 0 6em;
-  background-color: Window;
-}
-
-.wizard-header {
-  -moz-appearance: none;
-  border: none;
-  padding: 2em 0 1em 0;
-  text-align: center;
-}
-.wizard-header-label {
-  font-size: 24pt;
-  font-weight: normal;
-}
-
-.wizard-buttons {
-  background-color: rgba(0,0,0,0.1);
-  padding: 1em;
-}
-
-.wizard-buttons-separator {
-  visibility: collapse;
-}
-
-.wizard-header-icon {
-  visibility: collapse;
-}
-
-.accountChoiceButton {
-  font: menu;
-}
-
-.confirm {
-  border: 1px solid black;
-  padding: 1em;
-  border-radius: 5px;
-}
-
-/* Override the text-link style from global.css */
-description > .text-link,
-description > .text-link:focus {
-  margin: 0px;
-  padding: 0px;
-  border: 0px;
-}
-
-
-.success,
-.error {
-  padding: 2px;
-  border-radius: 2px;
-}
-
-.error {
-  background-color: #FF0000 !important;
-  color: #FFFFFF !important;
-}
-
-.success {
-  background-color: #00FF00 !important;
-}
-
-.warning {
-  font-weight: bold;
-  font-size: 100%;
-  color: red;
-}
-
-.mainDesc {
-  font-weight: bold;
-  font-size: 100%;
-}
-
-.normal {
-  font-size: 100%;
-}
-
-.inputColumn {
-  margin-inline-end: 2px
-}
-
-.pin {
-  font-size: 18pt;
-  width: 4em;
-  text-align: center; 
-}
-
-#passphraseHelpSpacer {
-  width: 0.5em;
-}
-
-#pairDeviceThrobber,
-#login-throbber {
-  -moz-box-align: center;
-}
-
-#pairDeviceThrobber > image,
-#login-throbber > image {
-  width: 16px;
-  list-style-image: url("chrome://global/skin/icons/loading.png");
-}
-
-#captchaFeedback {
-  visibility: hidden;
-}
-
-#successPageIcon {
-  /* TODO replace this with a 128px version (bug 591122) */
-  list-style-image: url("chrome://browser/skin/sync-32.png");
-}
diff --git a/browser/themes/linux/syncedtabs/sidebar.css b/browser/themes/linux/syncedtabs/sidebar.css
deleted file mode 100644
index 04e00a7d4..000000000
--- a/browser/themes/linux/syncedtabs/sidebar.css
+++ /dev/null
@@ -1,69 +0,0 @@
-/* This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
-
-%include ../../shared/syncedtabs/sidebar.inc.css
-
-/* These styles are intended to mimic XUL trees and the XUL search box. */
-
-html {
-  border: 1px solid ThreeDShadow;
-  background-color: -moz-Field;
-  color: -moz-FieldText;
-  box-sizing: border-box;
-}
-
-.item {
-  padding-inline-end: 0;
-}
-
-.item-title {
-  margin: 1px 0 0;
-  margin-inline-end: 6px;
-}
-
-
-.search-box {
-  -moz-appearance: textfield;
-  cursor: text;
-  margin: 2px 4px;
-  border: 2px solid;
-  -moz-border-top-colors: ThreeDShadow ThreeDDarkShadow;
-  -moz-border-right-colors: ThreeDHighlight ThreeDLightShadow;
-  -moz-border-bottom-colors: ThreeDHighlight ThreeDLightShadow;
-  -moz-border-left-colors: ThreeDShadow ThreeDDarkShadow;
-  padding: 2px 2px 3px;
-  padding-inline-start: 4px;
-  background-color: -moz-Field;
-  color: -moz-FieldText;
-}
-
-.textbox-search-clear {
-  background-image: url(moz-icon://stock/gtk-clear?size=menu);
-  background-repeat: no-repeat;
-  width: 16px;
-  height: 16px;
-}
-
-.textbox-search-icon {
-  background-image: url(moz-icon://stock/gtk-find?size=menu);
-  background-repeat: no-repeat;
-  width: 16px;
-  height: 16px;
-  display: block;
-}
-
-.textbox-search-icon[searchbutton]:not([disabled]) ,
-.textbox-search-clear:not([disabled]) {
-  cursor: pointer;
-}
-
-.item.client .item-twisty-container {
-  -moz-appearance: treetwistyopen;
-  margin-top: 3px;
-  margin-left: 2px;
-}
-
-.item.client.closed .item-twisty-container {
-  -moz-appearance: treetwisty;
-}
diff --git a/browser/themes/linux/tabbrowser/alltabs-inverted.png b/browser/themes/linux/tabbrowser/alltabs-inverted.png
deleted file mode 100644
index f3261f1da..000000000
--- a/browser/themes/linux/tabbrowser/alltabs-inverted.png
+++ /dev/null
diff --git a/browser/themes/linux/tabbrowser/alltabs.png b/browser/themes/linux/tabbrowser/alltabs.png
deleted file mode 100644
index a7abe7396..000000000
--- a/browser/themes/linux/tabbrowser/alltabs.png
+++ /dev/null
diff --git a/browser/themes/linux/tabbrowser/newtab-inverted.svg b/browser/themes/linux/tabbrowser/newtab-inverted.svg
deleted file mode 100644
index 2728cda5c..000000000
--- a/browser/themes/linux/tabbrowser/newtab-inverted.svg
+++ /dev/null
@@ -1,13 +0,0 @@
-<!-- This Source Code Form is subject to the terms of the Mozilla Public
-   - License, v. 2.0. If a copy of the MPL was not distributed with this
-   - file, You can obtain one at http://mozilla.org/MPL/2.0/. -->
-<svg width="16" height="18" xmlns="http://www.w3.org/2000/svg">
-  <g stroke="#666" stroke-width="2" fill="none">
-    <rect x="7" y="3" width="2" height="12" rx="0.25" ry="0.25"/>
-    <rect x="2" y="8" width="12" height="2" rx="0.25" ry="0.25"/>
-  </g>
-  <g fill="#fff">
-    <rect x="7" y="3" width="2" height="12"/>
-    <rect x="2" y="8" width="12" height="2"/>
-  </g>
-</svg>
diff --git a/browser/themes/linux/tabbrowser/newtab.svg b/browser/themes/linux/tabbrowser/newtab.svg
deleted file mode 100644
index 40548da4a..000000000
--- a/browser/themes/linux/tabbrowser/newtab.svg
+++ /dev/null
@@ -1,7 +0,0 @@
-<!-- This Source Code Form is subject to the terms of the Mozilla Public
-   - License, v. 2.0. If a copy of the MPL was not distributed with this
-   - file, You can obtain one at http://mozilla.org/MPL/2.0/. -->
-<svg width="16" height="18" xmlns="http://www.w3.org/2000/svg" fill="#4c4c4c">
-  <rect x="7" y="3" width="2" height="12"/>
-  <rect x="2" y="8" width="12" height="2"/>
-</svg>
diff --git a/browser/themes/linux/tabbrowser/tab-active-middle.png b/browser/themes/linux/tabbrowser/tab-active-middle.png
deleted file mode 100644
index b7e6d6f77..000000000
--- a/browser/themes/linux/tabbrowser/tab-active-middle.png
+++ /dev/null
diff --git a/browser/themes/linux/tabbrowser/tab-active-middle@2x.png b/browser/themes/linux/tabbrowser/tab-active-middle@2x.png
deleted file mode 100644
index 1e92acbda..000000000
--- a/browser/themes/linux/tabbrowser/tab-active-middle@2x.png
+++ /dev/null
diff --git a/browser/themes/linux/tabbrowser/tab-arrow-left-inverted.png b/browser/themes/linux/tabbrowser/tab-arrow-left-inverted.png
deleted file mode 100644
index 16cd7a277..000000000
--- a/browser/themes/linux/tabbrowser/tab-arrow-left-inverted.png
+++ /dev/null
diff --git a/browser/themes/linux/tabbrowser/tab-arrow-left.png b/browser/themes/linux/tabbrowser/tab-arrow-left.png
deleted file mode 100644
index e0fb348d6..000000000
--- a/browser/themes/linux/tabbrowser/tab-arrow-left.png
+++ /dev/null
diff --git a/browser/themes/linux/tabbrowser/tab-background-end.png b/browser/themes/linux/tabbrowser/tab-background-end.png
deleted file mode 100644
index fb353b17e..000000000
--- a/browser/themes/linux/tabbrowser/tab-background-end.png
+++ /dev/null
diff --git a/browser/themes/linux/tabbrowser/tab-background-end@2x.png b/browser/themes/linux/tabbrowser/tab-background-end@2x.png
deleted file mode 100644
index eefb6ac47..000000000
--- a/browser/themes/linux/tabbrowser/tab-background-end@2x.png
+++ /dev/null
diff --git a/browser/themes/linux/tabbrowser/tab-background-middle.png b/browser/themes/linux/tabbrowser/tab-background-middle.png
deleted file mode 100644
index 51e066c2e..000000000
--- a/browser/themes/linux/tabbrowser/tab-background-middle.png
+++ /dev/null
diff --git a/browser/themes/linux/tabbrowser/tab-background-middle@2x.png b/browser/themes/linux/tabbrowser/tab-background-middle@2x.png
deleted file mode 100644
index b26cb95de..000000000
--- a/browser/themes/linux/tabbrowser/tab-background-middle@2x.png
+++ /dev/null
diff --git a/browser/themes/linux/tabbrowser/tab-background-start.png b/browser/themes/linux/tabbrowser/tab-background-start.png
deleted file mode 100644
index cf0dc852a..000000000
--- a/browser/themes/linux/tabbrowser/tab-background-start.png
+++ /dev/null
diff --git a/browser/themes/linux/tabbrowser/tab-background-start@2x.png b/browser/themes/linux/tabbrowser/tab-background-start@2x.png
deleted file mode 100644
index bbfc77dd1..000000000
--- a/browser/themes/linux/tabbrowser/tab-background-start@2x.png
+++ /dev/null
diff --git a/browser/themes/linux/tabbrowser/tab-stroke-end.png b/browser/themes/linux/tabbrowser/tab-stroke-end.png
deleted file mode 100644
index 2aa5711f8..000000000
--- a/browser/themes/linux/tabbrowser/tab-stroke-end.png
+++ /dev/null
diff --git a/browser/themes/linux/tabbrowser/tab-stroke-end@2x.png b/browser/themes/linux/tabbrowser/tab-stroke-end@2x.png
deleted file mode 100644
index a87002a83..000000000
--- a/browser/themes/linux/tabbrowser/tab-stroke-end@2x.png
+++ /dev/null
diff --git a/browser/themes/linux/tabbrowser/tab-stroke-start.png b/browser/themes/linux/tabbrowser/tab-stroke-start.png
deleted file mode 100644
index 4e4e41f63..000000000
--- a/browser/themes/linux/tabbrowser/tab-stroke-start.png
+++ /dev/null
diff --git a/browser/themes/linux/tabbrowser/tab-stroke-start@2x.png b/browser/themes/linux/tabbrowser/tab-stroke-start@2x.png
deleted file mode 100644
index 13bd6add1..000000000
--- a/browser/themes/linux/tabbrowser/tab-stroke-start@2x.png
+++ /dev/null
diff --git a/browser/themes/linux/tabbrowser/tabDragIndicator.png b/browser/themes/linux/tabbrowser/tabDragIndicator.png
deleted file mode 100644
index df7d914f8..000000000
--- a/browser/themes/linux/tabbrowser/tabDragIndicator.png
+++ /dev/null
diff --git a/browser/themes/linux/webRTC-indicator.css b/browser/themes/linux/webRTC-indicator.css
deleted file mode 100644
index c22f942ec..000000000
--- a/browser/themes/linux/webRTC-indicator.css
+++ /dev/null
@@ -1,116 +0,0 @@
-/* This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
-
-window {
-  border: 1px solid #ff9500;
-}
-
-#audioVideoButton,
-#screenShareButton,
-#firefoxButton {
-  height: 29px;
-  margin: 0;
-  -moz-appearance: none;
-  border-style: none;
-}
-
-#firefoxButton {
-  background-image: url("chrome://branding/content/icon48.png");
-  background-repeat: no-repeat;
-  background-size: 22px;
-  background-position: center center;
-  min-width: 29px;
-  background-color: white;
-}
-
-#firefoxButton:hover {
-  background-color: #f2f2f2;
-}
-
-#screenShareButton {
-  background-image: url("webRTC-screen-white-16.png");
-  background-position: center center;
-  background-repeat: no-repeat;
-  background-size: 16px;
-  min-width: 27px;
-  display: none;
-}
-
-window[sharingscreen] > #screenShareButton {
-  display: -moz-box;
-}
-
-#audioVideoButton {
-  display: none;
-  background-repeat: no-repeat;
-}
-
-/* When screen sharing, need to pull in the separator: */
-window[sharingscreen] > #audioVideoButton {
-  margin-right: -1px;
-}
-
-/* Single icon button: */
-window[sharingvideo] > #audioVideoButton,
-window[sharingaudio] > #audioVideoButton {
-  display: -moz-box;
-  background-position: center center;
-  background-size: 16px;
-  min-width: 26px;
-}
-
-window[sharingvideo] > #audioVideoButton {
-  background-image: url("webRTC-camera-white-16.png");
-}
-
-window[sharingaudio] > #audioVideoButton {
-  background-image: url("webRTC-microphone-white-16.png");
-}
-
-/* Multi-icon button: */
-window[sharingaudio][sharingvideo] > #audioVideoButton {
-  background-image: url("webRTC-camera-white-16.png"),
-                    url("webRTC-microphone-white-16.png");
-  background-position: 6px center, 26px center;
-  background-size: 16px, 16px;
-  min-width: 46px;
-}
-
-/* Hover styles */
-#audioVideoButton,
-#screenShareButton {
-  background-color: #ffaa33;
-}
-
-#audioVideoButton:hover,
-#screenShareButton:hover {
-  background-color: #ff9500;
-}
-
-/* Don't show the dropmarker for the type="menu" case */
-#audioVideoButton > .box-inherit > .button-menu-dropmarker,
-#screenShareButton > .box-inherit > .button-menu-dropmarker {
-  display: none;
-}
-
-/* Separator in case of screen sharing + video/audio sharing */
-#shareSeparator {
-  width: 1px;
-  margin: 4px -1px 4px 0;
-  background-color: #FFCA80;
-  /* Separator needs to show above either button when they're hovered: */
-  position: relative;
-  z-index: 1;
-  display: none;
-}
-
-window[sharingscreen][sharingvideo] > #shareSeparator,
-window[sharingscreen][sharingaudio] > #shareSeparator {
-  display: -moz-box;
-}
-
-:-moz-any(#audioVideoButton, #screenShareButton,
-          #firefoxButton):-moz-focusring > .button-box {
-  border: none;
-}