Merge branch 'master' into Basilisk-releasev2018.09.05

26 files changed, 36 insertions, 491 deletions

diff --git a/application/basilisk/app/macbuild/Contents/Info.plist.in b/application/basilisk/app/macbuild/Contents/Info.plist.in
index d6902fffd..3f9380606 100644
--- a/application/basilisk/app/macbuild/Contents/Info.plist.in
+++ b/application/basilisk/app/macbuild/Contents/Info.plist.in
@@ -143,7 +143,7 @@
 		</dict>
 	</array>
 	<key>CFBundleExecutable</key>
-	<string>firefox</string>
+	<string>basilisk</string>
 	<key>CFBundleGetInfoString</key>
 	<string>%MAC_APP_NAME% %APP_VERSION%</string>
 	<key>CFBundleIconFile</key>
@@ -213,7 +213,7 @@
 	<key>LSFileQuarantineEnabled</key>
 	<true/>
 	<key>LSMinimumSystemVersion</key>
-	<string>10.9.0</string>
+	<string>10.7.0</string>
   <key>NSSupportsAutomaticGraphicsSwitching</key>
   <true/>
   <key>NSPrincipalClass</key>
diff --git a/application/basilisk/app/profile/basilisk.js b/application/basilisk/app/profile/basilisk.js
index 2df95a97f..fd81e8204 100644
--- a/application/basilisk/app/profile/basilisk.js
+++ b/application/basilisk/app/profile/basilisk.js
@@ -543,9 +543,10 @@ pref("browser.gesture.tap", "cmd_fullZoomReset");
 pref("browser.snapshots.limit", 0);
 
 // 0: Nothing happens
-// 1: Scrolling contents
+// 1: Scroll contents
 // 2: Go back or go forward, in your history
-// 3: Zoom in or out.
+// 3: Zoom in or out
+// 4: Scroll contents with X and Y swapped
 #ifdef XP_MACOSX
 // On OS X, if the wheel has one axis only, shift+wheel comes through as a
 // horizontal scroll event. Thus, we can't assign anything other than normal
diff --git a/application/basilisk/base/content/aboutNetError.xhtml b/application/basilisk/base/content/aboutNetError.xhtml
index 609725c9e..3296600c8 100644
--- a/application/basilisk/base/content/aboutNetError.xhtml
+++ b/application/basilisk/base/content/aboutNetError.xhtml
@@ -123,13 +123,6 @@
         document.getElementById("advancedButton")
                 .addEventListener("click", function togglePanelVisibility() {
           toggleDisplay(panel);
-          if (gIsCertError) {
-            // Toggling the advanced panel must ensure that the debugging
-            // information panel is hidden as well, since it's opened by the
-            // error code link in the advanced panel.
-            var div = document.getElementById("certificateErrorDebugInformation");
-            div.style.display = "none";
-          }
 
           if (panel.style.display == "block") {
             // send event to trigger telemetry ping
@@ -149,11 +142,6 @@
 
         if (getCSSClass() == "expertBadCert") {
           toggleDisplay(document.getElementById("badCertAdvancedPanel"));
-          // Toggling the advanced panel must ensure that the debugging
-          // information panel is hidden as well, since it's opened by the
-          // error code link in the advanced panel.
-          var div = document.getElementById("certificateErrorDebugInformation");
-          div.style.display = "none";
         }
 
         disallowCertOverridesIfNeeded();
@@ -224,9 +212,6 @@
         }
 
         if (err == "sslv3Used") {
-          document.getElementById("learnMoreContainer").style.display = "block";
-          var learnMoreLink = document.getElementById("learnMoreLink");
-          learnMoreLink.href = "https://support.mozilla.org/kb/how-resolve-sslv3-error-messages-firefox";
           document.body.className = "certerror";
         }
 
@@ -270,17 +255,6 @@
         window.addEventListener("AboutNetErrorOptions", function(evt) {
         // Pinning errors are of type nssFailure2
           if (getErrorCode() == "nssFailure2" || getErrorCode() == "weakCryptoUsed") {
-            document.getElementById("learnMoreContainer").style.display = "block";
-            var learnMoreLink = document.getElementById("learnMoreLink");
-            // nssFailure2 also gets us other non-overrideable errors. Choose
-            // a "learn more" link based on description:
-            if (getDescription().includes("mozilla_pkix_error_key_pinning_failure")) {
-              learnMoreLink.href = "https://support.mozilla.org/kb/certificate-pinning-reports";
-            }
-            if (getErrorCode() == "weakCryptoUsed") {
-              learnMoreLink.href = "https://support.mozilla.org/kb/how-resolve-weak-crypto-error-messages-firefox";
-            }
-
             const hasPrefStyleError = [
               "interrupted", // This happens with subresources that are above the max tls
               "SSL_ERROR_PROTOCOL_VERSION_ALERT",
@@ -312,7 +286,7 @@
           }
         }
 
-        addDomainErrorLinks();
+        addDomainErrorLink();
       }
 
       function initPageCaptivePortal()
@@ -329,7 +303,7 @@
         addAutofocus("openPortalLoginPageButton");
         setupAdvancedButton(true);
 
-        addDomainErrorLinks();
+        addDomainErrorLink();
 
         // When the portal is freed, an event is generated by the frame script
         // that we can pick up and attempt to reload the original page.
@@ -348,12 +322,10 @@
         addAutofocus("returnButton");
         setupAdvancedButton(true);
 
-        document.getElementById("learnMoreContainer").style.display = "block";
-
         let event = new CustomEvent("AboutNetErrorLoad", {bubbles:true});
         document.getElementById("advancedButton").dispatchEvent(event);
 
-        addDomainErrorLinks();
+        addDomainErrorLink();
       }
 
       /* Only do autofocus if we're the toplevel frame; otherwise we
@@ -372,16 +344,13 @@
         }
       }
 
-      /* Try to preserve the links contained in the error description, like
-         the error code.
-
-         Also, in the case of SSL error pages about domain mismatch, see if
+      /* In the case of SSL error pages about domain mismatch, see if
          we can hyperlink the user to the correct site.  We don't want
          to do this generically since it allows MitM attacks to redirect
          users to a site under attacker control, but in certain cases
          it is safe (and helpful!) to do so.  Bug 402210
       */
-      function addDomainErrorLinks() {
+      function addDomainErrorLink() {
         // Rather than textContent, we need to treat description as HTML
         var sdid = gIsCertError ? "badCertTechnicalInfo" : "errorShortDescText";
         var sd = document.getElementById(sdid);
@@ -390,50 +359,28 @@
 
           // sanitize description text - see bug 441169
 
-          // First, find the index of the <a> tags we care about, being
+          // First, find the index of the <a> tag we care about, being
           // careful not to use an over-greedy regex.
-          var codeRe = /<a id="errorCode" title="([^"]+)">/;
-          var codeResult = codeRe.exec(desc);
-          var domainRe = /<a id="cert_domain_link" title="([^"]+)">/;
-          var domainResult = domainRe.exec(desc);
-
-          // The order of these links in the description is fixed in
-          // TransportSecurityInfo.cpp:formatOverridableCertErrorMessage.
-          var firstResult = domainResult;
-          if (!domainResult)
-            firstResult = codeResult;
-          if (!firstResult)
+          var re = /<a id="cert_domain_link" title="([^"]+)">/;
+          var result = domainRe.exec(desc);
+
+          if (!result)
             return;
           // Remove sd's existing children
           sd.textContent = "";
 
-          // Everything up to the first link should be text content.
-          sd.appendChild(document.createTextNode(desc.slice(0, firstResult.index)));
+          // Everything up to the link should be text content.
+          sd.appendChild(document.createTextNode(desc.slice(0, result.index)));
 
-          // Now create the actual links.
-          if (domainResult) {
-            createLink(sd, "cert_domain_link", domainResult[1])
-            // Append text for anything between the two links.
-            sd.appendChild(document.createTextNode(desc.slice(desc.indexOf("</a>") + "</a>".length, codeResult.index)));
-          }
-          createLink(sd, "errorCode", codeResult[1])
+          // Now create the link itself.
+          var anchorEl = document.createElement("a");
+          anchorEl.setAttribute("id", "cert_domain_link");
+          anchorEl.setAttribute("title", result[1]);
+          anchorEl.appendChild(document.createTextNode(result[1]));
+          sd.appendChild(anchorEl);
 
-          // Finally, append text for anything after the last closing </a>.
-          sd.appendChild(document.createTextNode(desc.slice(desc.lastIndexOf("</a>") + "</a>".length)));
-        }
-
-        if (gIsCertError) {
-          // Initialize the error code link embedded in the error message to
-          // display debug information about the cert error.
-          var errorCode = document.getElementById("errorCode");
-          if (errorCode) {
-            errorCode.href = "javascript:void(0)";
-            errorCode.addEventListener("click", () => {
-              let debugInfo = document.getElementById("certificateErrorDebugInformation");
-              debugInfo.style.display = "block";
-              debugInfo.scrollIntoView({block: "start", behavior: "smooth"});
-            }, false);
-          }
+          // Finally, append text for anything after the closing </a>.
+          sd.appendChild(document.createTextNode(desc.slice(desc.indexOf("</a>") + "</a>".length)));
         }
 
         // Initialize the cert domain link.
@@ -479,23 +426,8 @@
         if (link.href && getCSSClass() != "expertBadCert") {
           var panelId = gIsCertError ? "badCertAdvancedPanel" : "weakCryptoAdvancedPanel"
           toggleDisplay(document.getElementById(panelId));
-          if (gIsCertError) {
-            // Toggling the advanced panel must ensure that the debugging
-            // information panel is hidden as well, since it's opened by the
-            // error code link in the advanced panel.
-            var div = document.getElementById("certificateErrorDebugInformation");
-            div.style.display = "none";
-          }
         }
       }
-
-      function createLink(el, id, text) {
-        var anchorEl = document.createElement("a");
-        anchorEl.setAttribute("id", id);
-        anchorEl.setAttribute("title", text);
-        anchorEl.appendChild(document.createTextNode(text));
-        el.appendChild(anchorEl);
-      }
     ]]></script>
   </head>
 
@@ -628,12 +560,6 @@
 
     </div>
 
-    <div id="certificateErrorDebugInformation">
-      <button id="copyToClipboard">&certerror.copyToClipboard.label;</button>
-      <div id="certificateErrorText"/>
-      <button id="copyToClipboard">&certerror.copyToClipboard.label;</button>
-    </div>
-
     <!--
     - Note: It is important to run the script this way, instead of using
     - an onload handler. This is because error pages are loaded as
diff --git a/application/basilisk/base/content/browser-fullScreenAndPointerLock.js b/application/basilisk/base/content/browser-fullScreenAndPointerLock.js
index dbc9478c1..ebe55377f 100644
--- a/application/basilisk/base/content/browser-fullScreenAndPointerLock.js
+++ b/application/basilisk/base/content/browser-fullScreenAndPointerLock.js
@@ -379,12 +379,10 @@ var FullScreen = {
           let topWin = event.target.ownerGlobal.top;
           browser = gBrowser.getBrowserForContentWindow(topWin);
         }
-        TelemetryStopwatch.start("FULLSCREEN_CHANGE_MS");
         this.enterDomFullscreen(browser);
         break;
       }
       case "MozDOMFullscreen:Exited":
-        TelemetryStopwatch.start("FULLSCREEN_CHANGE_MS");
         this.cleanupDomFullscreen();
         break;
     }
@@ -410,7 +408,6 @@ var FullScreen = {
       }
       case "DOMFullscreen:Painted": {
         Services.obs.notifyObservers(window, "fullscreen-painted", "");
-        TelemetryStopwatch.finish("FULLSCREEN_CHANGE_MS");
         break;
       }
     }
diff --git a/application/basilisk/base/content/browser-fxaccounts.js b/application/basilisk/base/content/browser-fxaccounts.js
index 0bbce3e26..94a591f1e 100644
--- a/application/basilisk/base/content/browser-fxaccounts.js
+++ b/application/basilisk/base/content/browser-fxaccounts.js
@@ -4,8 +4,6 @@
 
 var gFxAccounts = {
 
-  SYNC_MIGRATION_NOTIFICATION_TITLE: "fxa-migration",
-
   _initialized: false,
   _inCustomizationMode: false,
   _cachedProfile: null,
@@ -26,7 +24,6 @@ var gFxAccounts = {
       "weave:service:setup-complete",
       "weave:service:sync:error",
       "weave:ui:login:error",
-      "fxa-migration:state-changed",
       this.FxAccountsCommon.ONLOGIN_NOTIFICATION,
       this.FxAccountsCommon.ONLOGOUT_NOTIFICATION,
       this.FxAccountsCommon.ON_PROFILE_CHANGE_NOTIFICATION,
@@ -122,9 +119,6 @@ var gFxAccounts = {
 
   observe: function (subject, topic, data) {
     switch (topic) {
-      case "fxa-migration:state-changed":
-        this.onMigrationStateChanged(data, subject);
-        break;
       case this.FxAccountsCommon.ON_PROFILE_CHANGE_NOTIFICATION:
         this._cachedProfile = null;
         // Fallthrough intended
@@ -134,48 +128,6 @@ var gFxAccounts = {
     }
   },
 
-  onMigrationStateChanged: function () {
-    // Since we nuked most of the migration code, this notification will fire
-    // once after legacy Sync has been disconnected (and should never fire
-    // again)
-    let nb = window.document.getElementById("global-notificationbox");
-
-    let msg = this.strings.GetStringFromName("autoDisconnectDescription")
-    let signInLabel = this.strings.GetStringFromName("autoDisconnectSignIn.label");
-    let signInAccessKey = this.strings.GetStringFromName("autoDisconnectSignIn.accessKey");
-    let learnMoreLink = this.fxaMigrator.learnMoreLink;
-
-    let buttons = [
-      {
-        label: signInLabel,
-        accessKey: signInAccessKey,
-        callback: () => {
-          this.openPreferences();
-        }
-      }
-    ];
-
-    let fragment = document.createDocumentFragment();
-    let msgNode = document.createTextNode(msg);
-    fragment.appendChild(msgNode);
-    if (learnMoreLink) {
-      let link = document.createElement("label");
-      link.className = "text-link";
-      link.setAttribute("value", learnMoreLink.text);
-      link.href = learnMoreLink.href;
-      fragment.appendChild(link);
-    }
-
-    nb.appendNotification(fragment,
-                          this.SYNC_MIGRATION_NOTIFICATION_TITLE,
-                          undefined,
-                          nb.PRIORITY_WARNING_LOW,
-                          buttons);
-
-    // ensure the hamburger menu reflects the newly disconnected state.
-    this.updateAppMenuItem();
-  },
-
   handleEvent: function (event) {
     this._inCustomizationMode = event.type == "customizationstarting";
     this.updateAppMenuItem();
diff --git a/application/basilisk/base/content/browser-gestureSupport.js b/application/basilisk/base/content/browser-gestureSupport.js
index f472e5c9a..6c21a6ad5 100644
--- a/application/basilisk/base/content/browser-gestureSupport.js
+++ b/application/basilisk/base/content/browser-gestureSupport.js
@@ -1001,13 +1001,10 @@ var gHistorySwipeAnimation = {
                    ctx.DRAWWINDOW_ASYNC_DECODE_IMAGES |
                    ctx.DRAWWINDOW_USE_WIDGET_LAYERS);
 
-    TelemetryStopwatch.start("FX_GESTURE_INSTALL_SNAPSHOT_OF_PAGE");
     try {
       this._installCurrentPageSnapshot(canvas);
       this._assignSnapshotToCurrentBrowser(canvas);
-    } finally {
-      TelemetryStopwatch.finish("FX_GESTURE_INSTALL_SNAPSHOT_OF_PAGE");
-    }
+    }  catch (e) {}
   },
 
   /**
@@ -1058,7 +1055,6 @@ var gHistorySwipeAnimation = {
       return;
     }
 
-    TelemetryStopwatch.start("FX_GESTURE_COMPRESS_SNAPSHOT_OF_PAGE");
     try {
       let browser = gBrowser.selectedBrowser;
       let snapshots = browser.snapshots;
@@ -1072,9 +1068,7 @@ var gHistorySwipeAnimation = {
           }
         }, "image/png"
       );
-    } finally {
-      TelemetryStopwatch.finish("FX_GESTURE_COMPRESS_SNAPSHOT_OF_PAGE");
-    }
+    }  catch (e) {}
   },
 
   /**
diff --git a/application/basilisk/base/content/browser.js b/application/basilisk/base/content/browser.js
index 9ec7715fa..4f4ebb08f 100644
--- a/application/basilisk/base/content/browser.js
+++ b/application/basilisk/base/content/browser.js
@@ -45,7 +45,6 @@ Cu.import("resource://gre/modules/NotificationDB.jsm");
   ["SitePermissions", "resource:///modules/SitePermissions.jsm"],
   ["TabCrashHandler", "resource:///modules/ContentCrashHandlers.jsm"],
   ["Task", "resource://gre/modules/Task.jsm"],
-  ["TelemetryStopwatch", "resource://gre/modules/TelemetryStopwatch.jsm"],
   ["Translation", "resource:///modules/translation/Translation.jsm"],
   ["UpdateUtils", "resource://gre/modules/UpdateUtils.jsm"],
   ["Weave", "resource://services-sync/main.js"],
@@ -2888,24 +2887,7 @@ var BrowserOnClick = {
           secHistogram.add(Ci.nsISecurityUITelemetry.WARNING_BAD_CERT_TOP_UNDERSTAND_RISKS);
         }
 
-        securityInfo = getSecurityInfo(securityInfoAsString);
-        let errorInfo = getDetailedCertErrorInfo(location,
-                                                 securityInfo);
-        browser.messageManager.sendAsyncMessage( "CertErrorDetails", {
-            code: securityInfo.errorCode,
-            info: errorInfo
-        });
-        break;
-
-      case "copyToClipboard":
-        const gClipboardHelper = Cc["@mozilla.org/widget/clipboardhelper;1"]
-                                    .getService(Ci.nsIClipboardHelper);
-        securityInfo = getSecurityInfo(securityInfoAsString);
-        let detailedInfo = getDetailedCertErrorInfo(location,
-                                                    securityInfo);
-        gClipboardHelper.copyString(detailedInfo);
         break;
-
     }
   },
 
@@ -3145,81 +3127,6 @@ function getSecurityInfo(securityInfoAsString) {
   return securityInfo;
 }
 
-/**
- * Returns a string with detailed information about the certificate validation
- * failure from the specified URI that can be used to send a report.
- */
-function getDetailedCertErrorInfo(location, securityInfo) {
-  if (!securityInfo)
-    return "";
-
-  let certErrorDetails = location;
-  let code = securityInfo.errorCode;
-  let errors = Cc["@mozilla.org/nss_errors_service;1"]
-                  .getService(Ci.nsINSSErrorsService);
-
-  certErrorDetails += "\r\n\r\n" + errors.getErrorMessage(errors.getXPCOMFromNSSError(code));
-
-  const sss = Cc["@mozilla.org/ssservice;1"]
-                 .getService(Ci.nsISiteSecurityService);
-  // SiteSecurityService uses different storage if the channel is
-  // private. Thus we must give isSecureHost correct flags or we
-  // might get incorrect results.
-  let flags = PrivateBrowsingUtils.isWindowPrivate(window) ?
-              Ci.nsISocketProvider.NO_PERMANENT_STORAGE : 0;
-
-  let uri = Services.io.newURI(location, null, null);
-
-  let hasHSTS = sss.isSecureHost(sss.HEADER_HSTS, uri.host, flags);
-  let hasHPKP = sss.isSecureHost(sss.HEADER_HPKP, uri.host, flags);
-  certErrorDetails += "\r\n\r\n" +
-                      gNavigatorBundle.getFormattedString("certErrorDetailsHSTS.label",
-                                                          [hasHSTS]);
-  certErrorDetails += "\r\n" +
-                      gNavigatorBundle.getFormattedString("certErrorDetailsKeyPinning.label",
-                                                          [hasHPKP]);
-
-  let certChain = "";
-  if (securityInfo.failedCertChain) {
-    let certs = securityInfo.failedCertChain.getEnumerator();
-    while (certs.hasMoreElements()) {
-      let cert = certs.getNext();
-      cert.QueryInterface(Ci.nsIX509Cert);
-      certChain += getPEMString(cert);
-    }
-  }
-
-  certErrorDetails += "\r\n\r\n" +
-                      gNavigatorBundle.getString("certErrorDetailsCertChain.label") +
-                      "\r\n\r\n" + certChain;
-
-  return certErrorDetails;
-}
-
-// TODO: can we pull getDERString and getPEMString in from pippki.js instead of
-// duplicating them here?
-function getDERString(cert)
-{
-  var length = {};
-  var derArray = cert.getRawDER(length);
-  var derString = '';
-  for (var i = 0; i < derArray.length; i++) {
-    derString += String.fromCharCode(derArray[i]);
-  }
-  return derString;
-}
-
-function getPEMString(cert)
-{
-  var derb64 = btoa(getDERString(cert));
-  // Wrap the Base64 string into lines of 64 characters,
-  // with CRLF line breaks (as specified in RFC 1421).
-  var wrapped = derb64.replace(/(\S{64}(?!$))/g, "$1\r\n");
-  return "-----BEGIN CERTIFICATE-----\r\n"
-         + wrapped
-         + "\r\n-----END CERTIFICATE-----\r\n";
-}
-
 var PrintPreviewListener = {
   _printPreviewTab: null,
   _tabBeforePrintPreview: null,
@@ -3910,8 +3817,6 @@ function toOpenWindowByType(inType, uri, features)
 
 function OpenBrowserWindow(options)
 {
-  var telemetryObj = {};
-  TelemetryStopwatch.start("FX_NEW_WINDOW_MS", telemetryObj);
 
   function newDocumentShown(doc, topic, data) {
     if (topic == "document-shown" &&
@@ -3919,7 +3824,6 @@ function OpenBrowserWindow(options)
         doc.defaultView == win) {
       Services.obs.removeObserver(newDocumentShown, "document-shown");
       Services.obs.removeObserver(windowClosed, "domwindowclosed");
-      TelemetryStopwatch.finish("FX_NEW_WINDOW_MS", telemetryObj);
     }
   }
 
@@ -4715,25 +4619,6 @@ var TabsProgressListener = {
   _startedLoadTimer: new WeakSet(),
 
   onStateChange: function (aBrowser, aWebProgress, aRequest, aStateFlags, aStatus) {
-    // Collect telemetry data about tab load times.
-    if (aWebProgress.isTopLevel && (!aRequest.originalURI || aRequest.originalURI.spec.scheme != "about")) {
-      if (aStateFlags & Ci.nsIWebProgressListener.STATE_IS_WINDOW) {
-        if (aStateFlags & Ci.nsIWebProgressListener.STATE_START) {
-          this._startedLoadTimer.add(aBrowser);
-          TelemetryStopwatch.start("FX_PAGE_LOAD_MS", aBrowser);
-          Services.telemetry.getHistogramById("FX_TOTAL_TOP_VISITS").add(true);
-        } else if (aStateFlags & Ci.nsIWebProgressListener.STATE_STOP &&
-                   this._startedLoadTimer.has(aBrowser)) {
-          this._startedLoadTimer.delete(aBrowser);
-          TelemetryStopwatch.finish("FX_PAGE_LOAD_MS", aBrowser);
-        }
-      } else if (aStateFlags & Ci.nsIWebProgressListener.STATE_STOP &&
-                 aStatus == Cr.NS_BINDING_ABORTED &&
-                 this._startedLoadTimer.has(aBrowser)) {
-        this._startedLoadTimer.delete(aBrowser);
-        TelemetryStopwatch.cancel("FX_PAGE_LOAD_MS", aBrowser);
-      }
-    }
 
     // We used to listen for clicks in the browser here, but when that
     // became unnecessary, removing the code below caused focus issues.
diff --git a/application/basilisk/base/content/browser.xul b/application/basilisk/base/content/browser.xul
index 982edfcd9..74a90f5e0 100644
--- a/application/basilisk/base/content/browser.xul
+++ b/application/basilisk/base/content/browser.xul
@@ -521,8 +521,7 @@
             tabbrowser="content"
             flex="1"
             setfocus="false"
-            tooltip="tabbrowser-tab-tooltip"
-            stopwatchid="FX_TAB_CLICK_MS">
+            tooltip="tabbrowser-tab-tooltip">
         <tab class="tabbrowser-tab" selected="true" visuallyselected="true" fadein="true"/>
       </tabs>
 
diff --git a/application/basilisk/base/content/content.js b/application/basilisk/base/content/content.js
index 88e58b501..5accbdf7b 100644
--- a/application/basilisk/base/content/content.js
+++ b/application/basilisk/base/content/content.js
@@ -298,12 +298,10 @@ var AboutNetAndCertErrorListener = {
   onCertErrorDetails(msg) {
     let div = content.document.getElementById("certificateErrorText");
     div.textContent = msg.data.info;
-    let learnMoreLink = content.document.getElementById("learnMoreLink");
     let baseURL = Services.urlFormatter.formatURLPref("app.support.baseURL");
 
     switch (msg.data.code) {
       case SEC_ERROR_UNKNOWN_ISSUER:
-        learnMoreLink.href = baseURL  + "security-error";
         break;
 
       // in case the certificate expired we make sure the system clock
@@ -336,7 +334,6 @@ var AboutNetAndCertErrorListener = {
           content.document.getElementById("wrongSystemTimePanel")
             .style.display = "block";
         }
-        learnMoreLink.href = baseURL  + "time-errors";
         break;
     }
   },
diff --git a/application/basilisk/base/content/sanitize.js b/application/basilisk/base/content/sanitize.js
index 841376580..0a00defa4 100644
--- a/application/basilisk/base/content/sanitize.js
+++ b/application/basilisk/base/content/sanitize.js
@@ -19,8 +19,6 @@ XPCOMUtils.defineLazyModuleGetter(this, "Task",
                                   "resource://gre/modules/Task.jsm");
 XPCOMUtils.defineLazyModuleGetter(this, "DownloadsCommon",
                                   "resource:///modules/DownloadsCommon.jsm");
-XPCOMUtils.defineLazyModuleGetter(this, "TelemetryStopwatch",
-                                  "resource://gre/modules/TelemetryStopwatch.jsm");
 XPCOMUtils.defineLazyModuleGetter(this, "console",
                                   "resource://gre/modules/Console.jsm");
 XPCOMUtils.defineLazyModuleGetter(this, "Preferences",
@@ -154,8 +152,6 @@ Sanitizer.prototype = {
     // we catch and store them, but continue to sanitize as much as possible.
     // Callers should check returned errors and give user feedback
     // about items that could not be sanitized
-    let refObj = {};
-    TelemetryStopwatch.start("FX_SANITIZE_TOTAL", refObj);
 
     let annotateError = (name, ex) => {
       progress[name] = "failed";
@@ -188,7 +184,7 @@ Sanitizer.prototype = {
     }
 
     // Sanitization is complete.
-    TelemetryStopwatch.finish("FX_SANITIZE_TOTAL", refObj);
+
     // Reset the inProgress preference since we were not killed during
     // sanitization.
     Preferences.reset(Sanitizer.PREF_SANITIZE_IN_PROGRESS);
@@ -210,8 +206,6 @@ Sanitizer.prototype = {
     cache: {
       clear: Task.async(function* (range) {
         let seenException;
-        let refObj = {};
-        TelemetryStopwatch.start("FX_SANITIZE_CACHE", refObj);
 
         try {
           // Cache doesn't consult timespan, nor does it have the
@@ -232,7 +226,6 @@ Sanitizer.prototype = {
           seenException = ex;
         }
 
-        TelemetryStopwatch.finish("FX_SANITIZE_CACHE", refObj);
         if (seenException) {
           throw seenException;
         }
@@ -243,10 +236,8 @@ Sanitizer.prototype = {
       clear: Task.async(function* (range) {
         let seenException;
         let yieldCounter = 0;
-        let refObj = {};
 
         // Clear cookies.
-        TelemetryStopwatch.start("FX_SANITIZE_COOKIES_2", refObj);
         try {
           let cookieMgr = Components.classes["@mozilla.org/cookiemanager;1"]
                                     .getService(Ci.nsICookieManager);
@@ -274,8 +265,6 @@ Sanitizer.prototype = {
           }
         } catch (ex) {
           seenException = ex;
-        } finally {
-          TelemetryStopwatch.finish("FX_SANITIZE_COOKIES_2", refObj);
         }
 
         // Clear deviceIds. Done asynchronously (returns before complete).
@@ -332,13 +321,6 @@ Sanitizer.prototype = {
         if (!range || age >= 0) {
           let tags = ph.getPluginTags();
           for (let tag of tags) {
-            let refObj = {};
-            let probe = "";
-            if (/\bFlash\b/.test(tag.name)) {
-              probe = tag.loaded ? "FX_SANITIZE_LOADED_FLASH"
-                                 : "FX_SANITIZE_UNLOADED_FLASH";
-              TelemetryStopwatch.start(probe, refObj);
-            }
             try {
               let rv = yield new Promise(resolve =>
                 ph.clearSiteData(tag, null, FLAG_CLEAR_ALL, age, resolve)
@@ -349,14 +331,8 @@ Sanitizer.prototype = {
                   ph.clearSiteData(tag, null, FLAG_CLEAR_ALL, -1, resolve)
                 );
               }
-              if (probe) {
-                TelemetryStopwatch.finish(probe, refObj);
-              }
             } catch (ex) {
               // Ignore errors from plug-ins
-              if (probe) {
-                TelemetryStopwatch.cancel(probe, refObj);
-              }
             }
           }
         }
@@ -413,8 +389,6 @@ Sanitizer.prototype = {
     history: {
       clear: Task.async(function* (range) {
         let seenException;
-        let refObj = {};
-        TelemetryStopwatch.start("FX_SANITIZE_HISTORY", refObj);
         try {
           if (range) {
             yield PlacesUtils.history.removeVisitsByFilter({
@@ -427,8 +401,6 @@ Sanitizer.prototype = {
           }
         } catch (ex) {
           seenException = ex;
-        } finally {
-          TelemetryStopwatch.finish("FX_SANITIZE_HISTORY", refObj);
         }
 
         try {
@@ -455,8 +427,6 @@ Sanitizer.prototype = {
     formdata: {
       clear: Task.async(function* (range) {
         let seenException;
-        let refObj = {};
-        TelemetryStopwatch.start("FX_SANITIZE_FORMDATA", refObj);
         try {
           // Clear undo history of all searchBars
           let windows = Services.wm.getEnumerator("navigator:browser");
@@ -504,7 +474,6 @@ Sanitizer.prototype = {
           seenException = ex;
         }
 
-        TelemetryStopwatch.finish("FX_SANITIZE_FORMDATA", refObj);
         if (seenException) {
           throw seenException;
         }
@@ -513,8 +482,6 @@ Sanitizer.prototype = {
 
     downloads: {
       clear: Task.async(function* (range) {
-        let refObj = {};
-        TelemetryStopwatch.start("FX_SANITIZE_DOWNLOADS", refObj);
         try {
           let filterByTime = null;
           if (range) {
@@ -528,16 +495,13 @@ Sanitizer.prototype = {
           // Clear all completed/cancelled downloads
           let list = yield Downloads.getList(Downloads.ALL);
           list.removeFinished(filterByTime);
-        } finally {
-          TelemetryStopwatch.finish("FX_SANITIZE_DOWNLOADS", refObj);
-        }
+        } catch (ex) {
+	}
       })
     },
 
     sessions: {
       clear: Task.async(function* (range) {
-        let refObj = {};
-        TelemetryStopwatch.start("FX_SANITIZE_SESSIONS", refObj);
 
         try {
           // clear all auth tokens
@@ -547,17 +511,14 @@ Sanitizer.prototype = {
 
           // clear FTP and plain HTTP auth sessions
           Services.obs.notifyObservers(null, "net:clear-active-logins", null);
-        } finally {
-          TelemetryStopwatch.finish("FX_SANITIZE_SESSIONS", refObj);
-        }
+        } catch (ex) {
+	}
       })
     },
 
     siteSettings: {
       clear: Task.async(function* (range) {
         let seenException;
-        let refObj = {};
-        TelemetryStopwatch.start("FX_SANITIZE_SITESETTINGS", refObj);
 
         let startDateMS = range ? range[0] / 1000 : null;
 
@@ -615,7 +576,6 @@ Sanitizer.prototype = {
           seenException = ex;
         }
 
-        TelemetryStopwatch.finish("FX_SANITIZE_SITESETTINGS", refObj);
         if (seenException) {
           throw seenException;
         }
@@ -672,9 +632,6 @@ Sanitizer.prototype = {
 
         // If/once we get here, we should actually be able to close all windows.
 
-        let refObj = {};
-        TelemetryStopwatch.start("FX_SANITIZE_OPENWINDOWS", refObj);
-
         // First create a new window. We do this first so that on non-mac, we don't
         // accidentally close the app by closing all the windows.
         let handler = Cc["@mozilla.org/browser/clh;1"].getService(Ci.nsIBrowserHandler);
@@ -719,7 +676,6 @@ Sanitizer.prototype = {
             newWindowOpened = true;
             // If we're the last thing to happen, invoke callback.
             if (numWindowsClosing == 0) {
-              TelemetryStopwatch.finish("FX_SANITIZE_OPENWINDOWS", refObj);
               resolve();
             }
           }
@@ -731,7 +687,6 @@ Sanitizer.prototype = {
               Services.obs.removeObserver(onWindowClosed, "xul-window-destroyed");
               // If we're the last thing to happen, invoke callback.
               if (newWindowOpened) {
-                TelemetryStopwatch.finish("FX_SANITIZE_OPENWINDOWS", refObj);
                 resolve();
               }
             }
diff --git a/application/basilisk/base/content/tabbrowser.xml b/application/basilisk/base/content/tabbrowser.xml
index f8dbcf364..76ea5d167 100644
--- a/application/basilisk/base/content/tabbrowser.xml
+++ b/application/basilisk/base/content/tabbrowser.xml
@@ -1042,11 +1042,6 @@
         </body>
       </method>
 
-      <!-- Holds a unique ID for the tab change that's currently being timed.
-           Used to make sure that multiple, rapid tab switches do not try to
-           create overlapping timers. -->
-      <field name="_tabSwitchID">null</field>
-
       <method name="updateCurrentBrowser">
         <parameter name="aForceUpdate"/>
         <body>
@@ -1055,33 +1050,6 @@
             if (this.mCurrentBrowser == newBrowser && !aForceUpdate)
               return;
 
-            if (!aForceUpdate) {
-              TelemetryStopwatch.start("FX_TAB_SWITCH_UPDATE_MS");
-              if (!gMultiProcessBrowser) {
-                // old way of measuring tab paint which is not valid with e10s.
-                // Waiting until the next MozAfterPaint ensures that we capture
-                // the time it takes to paint, upload the textures to the compositor,
-                // and then composite.
-                if (this._tabSwitchID) {
-                  TelemetryStopwatch.cancel("FX_TAB_SWITCH_TOTAL_MS");
-                }
-
-                let tabSwitchID = Symbol();
-
-                TelemetryStopwatch.start("FX_TAB_SWITCH_TOTAL_MS");
-                this._tabSwitchID = tabSwitchID;
-
-                let onMozAfterPaint = () => {
-                  if (this._tabSwitchID === tabSwitchID) {
-                    TelemetryStopwatch.finish("FX_TAB_SWITCH_TOTAL_MS");
-                    this._tabSwitchID = null;
-                  }
-                  window.removeEventListener("MozAfterPaint", onMozAfterPaint);
-                }
-                window.addEventListener("MozAfterPaint", onMozAfterPaint);
-              }
-            }
-
             var oldTab = this.mCurrentTab;
 
             // Preview mode should not reset the owner
@@ -1274,9 +1242,6 @@
               });
               this.dispatchEvent(event);
             }
-
-            if (!aForceUpdate)
-              TelemetryStopwatch.finish("FX_TAB_SWITCH_UPDATE_MS");
           ]]>
         </body>
       </method>
@@ -4145,8 +4110,6 @@
              */
 
             startTabSwitch: function () {
-              TelemetryStopwatch.cancel("FX_TAB_SWITCH_TOTAL_E10S_MS", window);
-              TelemetryStopwatch.start("FX_TAB_SWITCH_TOTAL_E10S_MS", window);
               this.addMarker("AsyncTabSwitch:Start");
               this.switchInProgress = true;
             },
@@ -4162,31 +4125,18 @@
                   this.getTabState(this.requestedTab) == this.STATE_LOADED) {
                 // After this point the tab has switched from the content thread's point of view.
                 // The changes will be visible after the next refresh driver tick + composite.
-                let time = TelemetryStopwatch.timeElapsed("FX_TAB_SWITCH_TOTAL_E10S_MS", window);
-                if (time != -1) {
-                  TelemetryStopwatch.finish("FX_TAB_SWITCH_TOTAL_E10S_MS", window);
-                  this.log("DEBUG: tab switch time = " + time);
                   this.addMarker("AsyncTabSwitch:Finish");
-                }
                 this.switchInProgress = false;
               }
             },
 
             spinnerDisplayed: function () {
               this.assert(!this.spinnerTab);
-              TelemetryStopwatch.start("FX_TAB_SWITCH_SPINNER_VISIBLE_MS", window);
-              // We have a second, similar probe for capturing recordings of
-              // when the spinner is displayed for very long periods.
-              TelemetryStopwatch.start("FX_TAB_SWITCH_SPINNER_VISIBLE_LONG_MS", window);
               this.addMarker("AsyncTabSwitch:SpinnerShown");
             },
 
             spinnerHidden: function () {
               this.assert(this.spinnerTab);
-              this.log("DEBUG: spinner time = " +
-                       TelemetryStopwatch.timeElapsed("FX_TAB_SWITCH_SPINNER_VISIBLE_MS", window));
-              TelemetryStopwatch.finish("FX_TAB_SWITCH_SPINNER_VISIBLE_MS", window);
-              TelemetryStopwatch.finish("FX_TAB_SWITCH_SPINNER_VISIBLE_LONG_MS", window);
               this.addMarker("AsyncTabSwitch:SpinnerHidden");
               // we do not get a onPaint after displaying the spinner
               this.maybeFinishTabSwitch();
diff --git a/application/basilisk/branding/official/disk.icns b/application/basilisk/branding/official/disk.icns
index 82fdccff8..bb3fdd5e4 100644
--- a/application/basilisk/branding/official/disk.icns
+++ b/application/basilisk/branding/official/disk.icns
diff --git a/application/basilisk/branding/official/document.icns b/application/basilisk/branding/official/document.icns
index 5f03305d7..388296713 100644
--- a/application/basilisk/branding/official/document.icns
+++ b/application/basilisk/branding/official/document.icns
diff --git a/application/basilisk/branding/official/firefox.icns b/application/basilisk/branding/official/firefox.icns
index 4d2ad5a04..8b9232cba 100644
--- a/application/basilisk/branding/official/firefox.icns
+++ b/application/basilisk/branding/official/firefox.icns
diff --git a/application/basilisk/components/migration/AutoMigrate.jsm b/application/basilisk/components/migration/AutoMigrate.jsm
index b38747825..003f70d70 100644
--- a/application/basilisk/components/migration/AutoMigrate.jsm
+++ b/application/basilisk/components/migration/AutoMigrate.jsm
@@ -37,8 +37,6 @@ XPCOMUtils.defineLazyModuleGetter(this, "OS",
                                   "resource://gre/modules/osfile.jsm");
 XPCOMUtils.defineLazyModuleGetter(this, "PlacesUtils",
                                   "resource://gre/modules/PlacesUtils.jsm");
-XPCOMUtils.defineLazyModuleGetter(this, "TelemetryStopwatch",
-                                  "resource://gre/modules/TelemetryStopwatch.jsm");
 
 XPCOMUtils.defineLazyGetter(this, "gBrandBundle", function() {
   const kBrandBundle = "chrome://branding/locale/brand.properties";
@@ -211,7 +209,6 @@ const AutoMigrate = {
 
   undo: Task.async(function* () {
     let browserId = Preferences.get(kAutoMigrateBrowserPref, "unknown");
-    TelemetryStopwatch.startKeyed("FX_STARTUP_MIGRATION_UNDO_TOTAL_MS", browserId);
     let histogram = Services.telemetry.getHistogramById("FX_STARTUP_MIGRATION_AUTOMATED_IMPORT_UNDO");
     histogram.add(0);
     if (!(yield this.canUndo())) {
@@ -236,38 +233,24 @@ const AutoMigrate = {
       Services.telemetry.getKeyedHistogramById(histogramId).add(browserId, this._errorMap[type]);
     };
 
-    let startTelemetryStopwatch = resourceType => {
-      let histogramId = `FX_STARTUP_MIGRATION_UNDO_${resourceType.toUpperCase()}_MS`;
-      TelemetryStopwatch.startKeyed(histogramId, browserId);
-    };
-    let stopTelemetryStopwatch = resourceType => {
-      let histogramId = `FX_STARTUP_MIGRATION_UNDO_${resourceType.toUpperCase()}_MS`;
-      TelemetryStopwatch.finishKeyed(histogramId, browserId);
-    };
-    startTelemetryStopwatch("bookmarks");
     yield this._removeUnchangedBookmarks(stateData.get("bookmarks")).catch(ex => {
       Cu.reportError("Uncaught exception when removing unchanged bookmarks!");
       Cu.reportError(ex);
     });
-    stopTelemetryStopwatch("bookmarks");
     reportErrorTelemetry("bookmarks");
     histogram.add(15);
 
-    startTelemetryStopwatch("visits");
     yield this._removeSomeVisits(stateData.get("visits")).catch(ex => {
       Cu.reportError("Uncaught exception when removing history visits!");
       Cu.reportError(ex);
     });
-    stopTelemetryStopwatch("visits");
     reportErrorTelemetry("visits");
     histogram.add(20);
 
-    startTelemetryStopwatch("logins");
     yield this._removeUnchangedLogins(stateData.get("logins")).catch(ex => {
       Cu.reportError("Uncaught exception when removing unchanged logins!");
       Cu.reportError(ex);
     });
-    stopTelemetryStopwatch("logins");
     reportErrorTelemetry("logins");
     histogram.add(25);
 
@@ -278,7 +261,6 @@ const AutoMigrate = {
 
     this._purgeUndoState(this.UNDO_REMOVED_REASON_UNDO_USED);
     histogram.add(30);
-    TelemetryStopwatch.finishKeyed("FX_STARTUP_MIGRATION_UNDO_TOTAL_MS", browserId);
   }),
 
   _removeNotificationBars() {
diff --git a/application/basilisk/components/migration/MigrationUtils.jsm b/application/basilisk/components/migration/MigrationUtils.jsm
index e133ec520..ccae006fe 100644
--- a/application/basilisk/components/migration/MigrationUtils.jsm
+++ b/application/basilisk/components/migration/MigrationUtils.jsm
@@ -32,8 +32,6 @@ XPCOMUtils.defineLazyModuleGetter(this, "ResponsivenessMonitor",
                                   "resource://gre/modules/ResponsivenessMonitor.jsm");
 XPCOMUtils.defineLazyModuleGetter(this, "Sqlite",
                                   "resource://gre/modules/Sqlite.jsm");
-XPCOMUtils.defineLazyModuleGetter(this, "TelemetryStopwatch",
-                                  "resource://gre/modules/TelemetryStopwatch.jsm");
 XPCOMUtils.defineLazyModuleGetter(this, "WindowsRegistry",
                                   "resource://gre/modules/WindowsRegistry.jsm");
 
@@ -254,14 +252,6 @@ this.MigratorPrototype = {
 
     let browserKey = this.getBrowserKey();
 
-    let maybeStartTelemetryStopwatch = resourceType => {
-      let histogramId = getHistogramIdForResourceType(resourceType, "FX_MIGRATION_*_IMPORT_MS");
-      if (histogramId) {
-        TelemetryStopwatch.startKeyed(histogramId, browserKey);
-      }
-      return histogramId;
-    };
-
     let maybeStartResponsivenessMonitor = resourceType => {
       let responsivenessMonitor;
       let responsivenessHistogramId =
@@ -323,8 +313,6 @@ this.MigratorPrototype = {
       for (let [migrationType, itemResources] of resourcesGroupedByItems) {
         notify("Migration:ItemBeforeMigrate", migrationType);
 
-        let stopwatchHistogramId = maybeStartTelemetryStopwatch(migrationType);
-
         let {responsivenessMonitor, responsivenessHistogramId} =
           maybeStartResponsivenessMonitor(migrationType);
 
@@ -340,10 +328,6 @@ this.MigratorPrototype = {
                      migrationType);
               resourcesGroupedByItems.delete(migrationType);
 
-              if (stopwatchHistogramId) {
-                TelemetryStopwatch.finishKeyed(stopwatchHistogramId, browserKey);
-              }
-
               maybeFinishResponsivenessMonitor(responsivenessMonitor, responsivenessHistogramId);
 
               if (resourcesGroupedByItems.size == 0) {
diff --git a/application/basilisk/components/migration/content/migration.xul b/application/basilisk/components/migration/content/migration.xul
index e85091002..62c97c107 100644
--- a/application/basilisk/components/migration/content/migration.xul
+++ b/application/basilisk/components/migration/content/migration.xul
@@ -24,11 +24,9 @@
   <wizardpage id="importSource" pageid="importSource" next="selectProfile"
               label="&importSource.title;"
               onpageadvanced="return MigrationWizard.onImportSourcePageAdvanced();">
-#ifdef XP_WIN
+
     <description id="importAll" control="importSourceGroup">&importFrom.label;</description>
-#else
-    <description id="importAll" control="importSourceGroup">&importFromUnix.label;</description>
-#endif
+
     <description id="importBookmarks" control="importSourceGroup" hidden="true">&importFromBookmarks.label;</description>
 
     <radiogroup id="importSourceGroup" align="start">
diff --git a/application/basilisk/components/places/content/history-panel.js b/application/basilisk/components/places/content/history-panel.js
index 20dbbb5bd..65f00e93b 100644
--- a/application/basilisk/components/places/content/history-panel.js
+++ b/application/basilisk/components/places/content/history-panel.js
@@ -3,8 +3,6 @@
  * 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/. */
 
-Components.utils.import("resource://gre/modules/TelemetryStopwatch.jsm");
-
 var gHistoryTree;
 var gSearchBox;
 var gHistoryGrouping = "";
@@ -81,16 +79,11 @@ function searchHistory(aInput)
   options.resultType = resultType;
   options.includeHidden = !!aInput;
 
-  if (gHistoryGrouping == "lastvisited")
-    this.TelemetryStopwatch.start("HISTORY_LASTVISITED_TREE_QUERY_TIME_MS");
-
   // call load() on the tree manually
   // instead of setting the place attribute in history-panel.xul
   // otherwise, we will end up calling load() twice
   gHistoryTree.load([query], options);
 
-  if (gHistoryGrouping == "lastvisited")
-    this.TelemetryStopwatch.finish("HISTORY_LASTVISITED_TREE_QUERY_TIME_MS");
 }
 
 window.addEventListener("SidebarFocused",
diff --git a/application/basilisk/components/places/content/places.js b/application/basilisk/components/places/content/places.js
index aa43b20e6..375c3de17 100644
--- a/application/basilisk/components/places/content/places.js
+++ b/application/basilisk/components/places/content/places.js
@@ -5,7 +5,6 @@
 
 Components.utils.import("resource://gre/modules/AppConstants.jsm");
 Components.utils.import("resource://gre/modules/XPCOMUtils.jsm");
-Components.utils.import("resource://gre/modules/TelemetryStopwatch.jsm");
 XPCOMUtils.defineLazyModuleGetter(this, "MigrationUtils",
                                   "resource:///modules/MigrationUtils.jsm");
 XPCOMUtils.defineLazyModuleGetter(this, "Task",
@@ -810,9 +809,7 @@ var PlacesSearchBox = {
           currentView.load([query], options);
         }
         else {
-          TelemetryStopwatch.start(HISTORY_LIBRARY_SEARCH_TELEMETRY);
           currentView.applyFilter(filterString, null, true);
-          TelemetryStopwatch.finish(HISTORY_LIBRARY_SEARCH_TELEMETRY);
         }
         break;
       case "downloads":
diff --git a/application/basilisk/components/sessionstore/SessionFile.jsm b/application/basilisk/components/sessionstore/SessionFile.jsm
index 80c4e7790..3c55101e4 100644
--- a/application/basilisk/components/sessionstore/SessionFile.jsm
+++ b/application/basilisk/components/sessionstore/SessionFile.jsm
@@ -43,8 +43,6 @@ XPCOMUtils.defineLazyModuleGetter(this, "PromiseUtils",
   "resource://gre/modules/PromiseUtils.jsm");
 XPCOMUtils.defineLazyModuleGetter(this, "RunState",
   "resource:///modules/sessionstore/RunState.jsm");
-XPCOMUtils.defineLazyModuleGetter(this, "TelemetryStopwatch",
-  "resource://gre/modules/TelemetryStopwatch.jsm");
 XPCOMUtils.defineLazyModuleGetter(this, "Task",
   "resource://gre/modules/Task.jsm");
 XPCOMUtils.defineLazyServiceGetter(this, "Telemetry",
diff --git a/application/basilisk/components/sessionstore/SessionSaver.jsm b/application/basilisk/components/sessionstore/SessionSaver.jsm
index d672f8877..fa3a67512 100644
--- a/application/basilisk/components/sessionstore/SessionSaver.jsm
+++ b/application/basilisk/components/sessionstore/SessionSaver.jsm
@@ -13,7 +13,6 @@ const Ci = Components.interfaces;
 Cu.import("resource://gre/modules/Timer.jsm", this);
 Cu.import("resource://gre/modules/Services.jsm", this);
 Cu.import("resource://gre/modules/XPCOMUtils.jsm", this);
-Cu.import("resource://gre/modules/TelemetryStopwatch.jsm", this);
 
 XPCOMUtils.defineLazyModuleGetter(this, "AppConstants",
   "resource://gre/modules/AppConstants.jsm");
@@ -52,19 +51,6 @@ function notify(subject, topic) {
   Services.obs.notifyObservers(subject, topic, "");
 }
 
-// TelemetryStopwatch helper functions.
-function stopWatch(method) {
-  return function (...histograms) {
-    for (let hist of histograms) {
-      TelemetryStopwatch[method]("FX_SESSION_RESTORE_" + hist);
-    }
-  };
-}
-
-var stopWatchStart = stopWatch("start");
-var stopWatchCancel = stopWatch("cancel");
-var stopWatchFinish = stopWatch("finish");
-
 /**
  * The external API implemented by the SessionSaver module.
  */
@@ -182,7 +168,6 @@ var SessionSaverInternal = {
       return Promise.resolve();
     }
 
-    stopWatchStart("COLLECT_DATA_MS", "COLLECT_DATA_LONGEST_OP_MS");
     let state = SessionStore.getCurrentState(forceUpdateAllWindows);
     PrivacyFilter.filterPrivateWindowsAndTabs(state);
 
@@ -226,7 +211,6 @@ var SessionSaverInternal = {
       }
     }
 
-    stopWatchFinish("COLLECT_DATA_MS", "COLLECT_DATA_LONGEST_OP_MS");
     return this._writeState(state);
   },
 
diff --git a/application/basilisk/components/sessionstore/SessionStore.jsm b/application/basilisk/components/sessionstore/SessionStore.jsm
index 6b30943f3..e23b205fc 100644
--- a/application/basilisk/components/sessionstore/SessionStore.jsm
+++ b/application/basilisk/components/sessionstore/SessionStore.jsm
@@ -135,7 +135,6 @@ Cu.import("resource://gre/modules/PrivateBrowsingUtils.jsm", this);
 Cu.import("resource://gre/modules/Promise.jsm", this);
 Cu.import("resource://gre/modules/Services.jsm", this);
 Cu.import("resource://gre/modules/Task.jsm", this);
-Cu.import("resource://gre/modules/TelemetryStopwatch.jsm", this);
 Cu.import("resource://gre/modules/TelemetryTimestamps.jsm", this);
 Cu.import("resource://gre/modules/Timer.jsm", this);
 Cu.import("resource://gre/modules/XPCOMUtils.jsm", this);
@@ -564,7 +563,6 @@ var SessionStoreInternal = {
    * Initialize the session using the state provided by SessionStartup
    */
   initSession: function () {
-    TelemetryStopwatch.start("FX_SESSION_RESTORE_STARTUP_INIT_SESSION_MS");
     let state;
     let ss = gSessionStartup;
 
@@ -640,7 +638,6 @@ var SessionStoreInternal = {
         this._prefBranch.getBoolPref("sessionstore.resume_session_once"))
       this._prefBranch.setBoolPref("sessionstore.resume_session_once", false);
 
-    TelemetryStopwatch.finish("FX_SESSION_RESTORE_STARTUP_INIT_SESSION_MS");
     return state;
   },
 
@@ -1247,9 +1244,7 @@ var SessionStoreInternal = {
         if (initialState) {
           Services.obs.notifyObservers(null, NOTIFY_RESTORING_ON_STARTUP, "");
         }
-        TelemetryStopwatch.start("FX_SESSION_RESTORE_STARTUP_ONLOAD_INITIAL_WINDOW_MS");
         this.initializeWindow(aWindow, initialState);
-        TelemetryStopwatch.finish("FX_SESSION_RESTORE_STARTUP_ONLOAD_INITIAL_WINDOW_MS");
 
         // Let everyone know we're done.
         this._deferredInitialized.resolve();
@@ -2857,7 +2852,6 @@ var SessionStoreInternal = {
 
     var activeWindow = this._getMostRecentBrowserWindow();
 
-    TelemetryStopwatch.start("FX_SESSION_RESTORE_COLLECT_ALL_WINDOWS_DATA_MS");
     if (RunState.isRunning) {
       // update the data for all windows with activities since the last save operation
       this._forEachBrowserWindow(function(aWindow) {
@@ -2872,7 +2866,6 @@ var SessionStoreInternal = {
       });
       DirtyWindows.clear();
     }
-    TelemetryStopwatch.finish("FX_SESSION_RESTORE_COLLECT_ALL_WINDOWS_DATA_MS");
 
     // An array that at the end will hold all current window data.
     var total = [];
@@ -2892,9 +2885,7 @@ var SessionStoreInternal = {
         nonPopupCount++;
     }
 
-    TelemetryStopwatch.start("FX_SESSION_RESTORE_COLLECT_COOKIES_MS");
     SessionCookies.update(total);
-    TelemetryStopwatch.finish("FX_SESSION_RESTORE_COLLECT_COOKIES_MS");
 
     // collect the data for all windows yet to be restored
     for (ix in this._statesToRestore) {
@@ -3063,8 +3054,6 @@ var SessionStoreInternal = {
     if (aWindow && (!aWindow.__SSi || !this._windows[aWindow.__SSi]))
       this.onLoad(aWindow);
 
-    TelemetryStopwatch.start("FX_SESSION_RESTORE_RESTORE_WINDOW_MS");
-
     // We're not returning from this before we end up calling restoreTabs
     // for this window, so make sure we send the SSWindowStateBusy event.
     this._setWindowStateBusy(aWindow);
@@ -3235,8 +3224,6 @@ var SessionStoreInternal = {
     // set smoothScroll back to the original value
     tabstrip.smoothScroll = smoothScroll;
 
-    TelemetryStopwatch.finish("FX_SESSION_RESTORE_RESTORE_WINDOW_MS");
-
     this._setWindowStateReady(aWindow);
 
     this._sendWindowRestoredNotification(aWindow);
diff --git a/application/basilisk/components/sessionstore/nsSessionStartup.js b/application/basilisk/components/sessionstore/nsSessionStartup.js
index 7593c48ec..9cda1552e 100644
--- a/application/basilisk/components/sessionstore/nsSessionStartup.js
+++ b/application/basilisk/components/sessionstore/nsSessionStartup.js
@@ -37,7 +37,6 @@ const Cr = Components.results;
 const Cu = Components.utils;
 Cu.import("resource://gre/modules/XPCOMUtils.jsm");
 Cu.import("resource://gre/modules/Services.jsm");
-Cu.import("resource://gre/modules/TelemetryStopwatch.jsm");
 Cu.import("resource://gre/modules/PrivateBrowsingUtils.jsm");
 Cu.import("resource://gre/modules/Promise.jsm");
 
diff --git a/application/basilisk/locales/en-US/chrome/browser/browser.properties b/application/basilisk/locales/en-US/chrome/browser/browser.properties
index aa7a82e4f..f1c39839b 100644
--- a/application/basilisk/locales/en-US/chrome/browser/browser.properties
+++ b/application/basilisk/locales/en-US/chrome/browser/browser.properties
@@ -679,13 +679,6 @@ weakCryptoOverriding.message = %S recommends that you don’t enter your passwor
 revokeOverride.label = Don’t Trust This Website
 revokeOverride.accesskey = D
 
-# LOCALIZATION NOTE (certErrorDetails*.label): These are text strings that
-# appear in the about:certerror page, so that the user can copy and send them to
-# the server administrators for troubleshooting.
-certErrorDetailsHSTS.label = HTTP Strict Transport Security: %S
-certErrorDetailsKeyPinning.label = HTTP Public Key Pinning: %S
-certErrorDetailsCertChain.label = Certificate chain:
-
 # LOCALIZATION NOTE (pendingCrashReports2.label): Semi-colon list of plural forms
 # See: http://developer.mozilla.org/en/docs/Localization_and_Plurals
 # #1 is the number of pending crash reports
diff --git a/application/basilisk/locales/en-US/chrome/overrides/netError.dtd b/application/basilisk/locales/en-US/chrome/overrides/netError.dtd
index 872847458..55da9a36c 100644
--- a/application/basilisk/locales/en-US/chrome/overrides/netError.dtd
+++ b/application/basilisk/locales/en-US/chrome/overrides/netError.dtd
@@ -203,7 +203,6 @@ was trying to connect. -->
 Strict Transport Security (HSTS) to specify that &brandShortName; may only connect
 to it securely. As a result, it is not possible to add an exception for this
 certificate.">
-<!ENTITY certerror.copyToClipboard.label "Copy text to clipboard">
 
 <!ENTITY inadequateSecurityError.title "Your connection is not secure">
 <!-- LOCALIZATION NOTE (inadequateSecurityError.longDesc) - Do not translate
diff --git a/application/basilisk/themes/shared/aboutNetError.css b/application/basilisk/themes/shared/aboutNetError.css
index c0b76aa47..7e1e7c32b 100644
--- a/application/basilisk/themes/shared/aboutNetError.css
+++ b/application/basilisk/themes/shared/aboutNetError.css
@@ -39,10 +39,6 @@ button:disabled {
   display: none;
 }
 
-#learnMoreContainer {
-  display: none;
-}
-
 #certErrorAndCaptivePortalButtonContainer {
   display: none;
 }
@@ -132,16 +128,12 @@ span#hostname {
   line-height: 16px
 }
 
-#errorCode:not([href]) {
+#errorCode {
   color: var(--in-content-page-color);
   cursor: text;
   text-decoration: none;
 }
 
-#errorCode[href] {
-  white-space: nowrap;
-}
-
 #badCertTechnicalInfo {
   overflow: auto;
   white-space: pre-wrap;
@@ -150,20 +142,3 @@ span#hostname {
 #certificateErrorReporting {
   display: none;
 }
-
-#certificateErrorDebugInformation {
-  display: none;
-  background-color: var(--in-content-box-background-hover) !important;
-  border-top: 1px solid var(--in-content-border-color);
-  position: absolute;
-  left: 0%;
-  top: 100%;
-  width: 65%;
-  padding: 1em 17.5%;
-}
-
-#certificateErrorText {
-  font-family: monospace;
-  white-space: pre-wrap;
-  padding: 1em 0;
-}