Merge branch 'master' of https://github.com/MoonchildProductions/UXP into js_array_values_1

29 files changed, 377 insertions, 86 deletions

diff --git a/dom/base/Element.cpp b/dom/base/Element.cpp
index 886acc670..9ced64c0d 100644
--- a/dom/base/Element.cpp
+++ b/dom/base/Element.cpp
@@ -165,10 +165,9 @@ nsIContent::DoGetID() const
 }
 
 const nsAttrValue*
-nsIContent::DoGetClasses() const
+Element::DoGetClasses() const
 {
   MOZ_ASSERT(HasFlag(NODE_MAY_HAVE_CLASS), "Unexpected call");
-  MOZ_ASSERT(IsElement(), "Only elements can have classes");
 
   if (IsSVGElement()) {
     const nsAttrValue* animClass =
@@ -178,7 +177,7 @@ nsIContent::DoGetClasses() const
     }
   }
 
-  return AsElement()->GetParsedAttr(nsGkAtoms::_class);
+  return GetParsedAttr(nsGkAtoms::_class);
 }
 
 NS_IMETHODIMP
diff --git a/dom/base/Element.h b/dom/base/Element.h
index 5d878df60..cf1d197e2 100644
--- a/dom/base/Element.h
+++ b/dom/base/Element.h
@@ -544,6 +544,18 @@ public:
   virtual uint32_t GetAttrCount() const override;
   virtual bool IsNodeOfType(uint32_t aFlags) const override;
 
+  /**
+   * Get the class list of this element (this corresponds to the value of the
+   * class attribute).  This may be null if there are no classes, but that's not
+   * guaranteed (e.g. we could have class="").
+   */
+  const nsAttrValue* GetClasses() const {
+    if (HasFlag(NODE_MAY_HAVE_CLASS)) {
+      return DoGetClasses();
+    }
+    return nullptr;
+  }
+
 #ifdef DEBUG
   virtual void List(FILE* out = stdout, int32_t aIndent = 0) const override
   {
@@ -1372,6 +1384,12 @@ protected:
 
 private:
   /**
+   * Hook for implementing GetClasses.  This is guaranteed to only be
+   * called if the NODE_MAY_HAVE_CLASS flag is set.
+   */
+  const nsAttrValue* DoGetClasses() const;
+
+  /**
    * Get this element's client area rect in app units.
    * @return the frame's client area
    */
diff --git a/dom/base/File.cpp b/dom/base/File.cpp
index 46b37b976..8602a3064 100644..100755
--- a/dom/base/File.cpp
+++ b/dom/base/File.cpp
@@ -29,6 +29,7 @@
 #include "nsStringStream.h"
 #include "nsJSUtils.h"
 #include "nsPrintfCString.h"
+#include "mozilla/TimerClamping.h"
 #include "mozilla/SHA1.h"
 #include "mozilla/CheckedInt.h"
 #include "mozilla/Preferences.h"
@@ -727,7 +728,7 @@ BlobImplBase::GetLastModified(ErrorResult& aRv)
     mLastModificationDate = PR_Now();
   }
 
-  return mLastModificationDate / PR_USEC_PER_MSEC;
+  return TimerClamping::ReduceUsTimeValue(mLastModificationDate) / PR_USEC_PER_MSEC;
 }
 
 void
diff --git a/dom/base/FragmentOrElement.cpp b/dom/base/FragmentOrElement.cpp
index 293177ce7..79f6cff51 100644
--- a/dom/base/FragmentOrElement.cpp
+++ b/dom/base/FragmentOrElement.cpp
@@ -574,6 +574,9 @@ FragmentOrElement::nsDOMSlots::Traverse(nsCycleCollectionTraversalCallback &cb,
   NS_CYCLE_COLLECTION_NOTE_EDGE_NAME(cb, "mSlots->mChildrenList");
   cb.NoteXPCOMChild(NS_ISUPPORTS_CAST(nsIDOMNodeList*, mChildrenList));
 
+  NS_CYCLE_COLLECTION_NOTE_EDGE_NAME(cb, "mSlots->mLabelsList");
+  cb.NoteXPCOMChild(NS_ISUPPORTS_CAST(nsIDOMNodeList*, mLabelsList));
+
   NS_CYCLE_COLLECTION_NOTE_EDGE_NAME(cb, "mSlots->mClassList");
   cb.NoteXPCOMChild(mClassList.get());
 
@@ -602,6 +605,7 @@ FragmentOrElement::nsDOMSlots::Unlink(bool aIsXUL)
   mShadowRoot = nullptr;
   mContainingShadow = nullptr;
   mChildrenList = nullptr;
+  mLabelsList = nullptr;
   mCustomElementData = nullptr;
   mClassList = nullptr;
 }
@@ -1827,7 +1831,8 @@ NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN_INTERNAL(FragmentOrElement)
     }
 
     nsAutoString classes;
-    const nsAttrValue* classAttrValue = tmp->GetClasses();
+    const nsAttrValue* classAttrValue = tmp->IsElement() ?
+      tmp->AsElement()->GetClasses() : nullptr;
     if (classAttrValue) {
       classes.AppendLiteral(" class='");
       nsAutoString classString;
diff --git a/dom/base/FragmentOrElement.h b/dom/base/FragmentOrElement.h
index 3cb5575fe..1cd8033bb 100644
--- a/dom/base/FragmentOrElement.h
+++ b/dom/base/FragmentOrElement.h
@@ -24,6 +24,7 @@
 
 class ContentUnbinder;
 class nsContentList;
+class nsLabelsNodeList;
 class nsDOMAttributeMap;
 class nsDOMTokenList;
 class nsIControllers;
@@ -313,6 +314,11 @@ public:
      */
     RefPtr<nsDOMTokenList> mClassList;
 
+    /*
+     * An object implementing the .labels property for this element.
+     */
+    RefPtr<nsLabelsNodeList> mLabelsList;
+
     /**
      * ShadowRoot bound to the element.
      */
diff --git a/dom/base/MultipartBlobImpl.cpp b/dom/base/MultipartBlobImpl.cpp
index ba26d07f9..03bb62add 100644..100755
--- a/dom/base/MultipartBlobImpl.cpp
+++ b/dom/base/MultipartBlobImpl.cpp
@@ -17,6 +17,7 @@
 #include "nsContentUtils.h"
 #include "nsIScriptError.h"
 #include "nsIXPConnect.h"
+#include "mozilla/TimerClamping.h"
 #include <algorithm>
 
 using namespace mozilla;
@@ -270,8 +271,7 @@ MultipartBlobImpl::SetLengthAndModifiedDate(ErrorResult& aRv)
     //   var x = new Date(); var f = new File(...);
     //   x.getTime() < f.dateModified.getTime()
     // could fail.
-    mLastModificationDate =
-      lastModifiedSet ? lastModified * PR_USEC_PER_MSEC : JS_Now();
+    mLastModificationDate = TimerClamping::ReduceUsTimeValue(lastModifiedSet ? lastModified * PR_USEC_PER_MSEC : JS_Now());
   }
 }
 
diff --git a/dom/base/Navigator.cpp b/dom/base/Navigator.cpp
index 290af152b..5c315517c 100644
--- a/dom/base/Navigator.cpp
+++ b/dom/base/Navigator.cpp
@@ -97,8 +97,10 @@
 #endif
 #include "mozilla/dom/ContentChild.h"
 
+#ifdef MOZ_EME
 #include "mozilla/EMEUtils.h"
 #include "mozilla/DetailedPromise.h"
+#endif
 
 namespace mozilla {
 namespace dom {
@@ -214,7 +216,9 @@ NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN(Navigator)
   NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mServiceWorkerContainer)
 
   NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mWindow)
+#ifdef MOZ_EME
   NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mMediaKeySystemAccessManager)
+#endif
   NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mPresentation)
 #ifdef MOZ_GAMEPAD
   NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mGamepadServiceTest)
@@ -288,10 +292,12 @@ Navigator::Invalidate()
 
   mServiceWorkerContainer = nullptr;
 
+#ifdef MOZ_EME
   if (mMediaKeySystemAccessManager) {
     mMediaKeySystemAccessManager->Shutdown();
     mMediaKeySystemAccessManager = nullptr;
   }
+#endif
 
 #ifdef MOZ_GAMEPAD
   if (mGamepadServiceTest) {
@@ -1854,16 +1860,6 @@ Navigator::GetUserAgent(nsPIDOMWindowInner* aWindow, nsIURI* aURI,
 {
   MOZ_ASSERT(NS_IsMainThread());
 
-  if (!aIsCallerChrome) {
-    const nsAdoptingString& override =
-      mozilla::Preferences::GetString("general.useragent.override");
-
-    if (override) {
-      aUserAgent = override;
-      return NS_OK;
-    }
-  }
-
   nsresult rv;
   nsCOMPtr<nsIHttpProtocolHandler>
     service(do_GetService(NS_NETWORK_PROTOCOL_CONTRACTID_PREFIX "http", &rv));
@@ -1894,6 +1890,7 @@ Navigator::GetUserAgent(nsPIDOMWindowInner* aWindow, nsIURI* aURI,
   return siteSpecificUA->GetUserAgentForURIAndWindow(aURI, aWindow, aUserAgent);
 }
 
+#ifdef MOZ_EME
 static nsCString
 ToCString(const nsString& aString)
 {
@@ -2019,6 +2016,7 @@ Navigator::RequestMediaKeySystemAccess(const nsAString& aKeySystem,
   mMediaKeySystemAccessManager->Request(promise, aKeySystem, aConfigs);
   return promise.forget();
 }
+#endif
 
 Presentation*
 Navigator::GetPresentation(ErrorResult& aRv)
diff --git a/dom/base/Navigator.h b/dom/base/Navigator.h
index 4b4ae6759..d47a80bc1 100644
--- a/dom/base/Navigator.h
+++ b/dom/base/Navigator.h
@@ -18,7 +18,9 @@
 #include "nsString.h"
 #include "nsTArray.h"
 #include "nsWeakPtr.h"
+#ifdef MOZ_EME
 #include "mozilla/dom/MediaKeySystemAccessManager.h"
+#endif
 
 class nsPluginArray;
 class nsMimeTypeArray;
@@ -258,12 +260,14 @@ public:
   // any, else null.
   static already_AddRefed<nsPIDOMWindowInner> GetWindowFromGlobal(JSObject* aGlobal);
 
+#ifdef MOZ_EME
   already_AddRefed<Promise>
   RequestMediaKeySystemAccess(const nsAString& aKeySystem,
                               const Sequence<MediaKeySystemConfiguration>& aConfig,
                               ErrorResult& aRv);
 private:
   RefPtr<MediaKeySystemAccessManager> mMediaKeySystemAccessManager;
+#endif
 
 public:
   void NotifyVRDisplaysUpdated();
diff --git a/dom/base/TimerClamping.cpp b/dom/base/TimerClamping.cpp
new file mode 100755
index 000000000..70639686b
--- /dev/null
+++ b/dom/base/TimerClamping.cpp
@@ -0,0 +1,35 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* 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 "TimerClamping.h"
+
+namespace mozilla {
+
+/* static */
+double
+TimerClamping::ReduceSTimeValue(double aTime)
+{
+  static const double maxResolutionS = .002;
+  return floor(aTime / maxResolutionS) * maxResolutionS;
+}
+
+/* static */
+double
+TimerClamping::ReduceMsTimeValue(double aTime)
+{
+  static const double maxResolutionMs = 2;
+  return floor(aTime / maxResolutionMs) * maxResolutionMs;
+}
+
+/* static */
+double
+TimerClamping::ReduceUsTimeValue(double aTime)
+{
+  static const double maxResolutionUs = 2000;
+  return floor(aTime / maxResolutionUs) * maxResolutionUs;
+}
+
+}
\ No newline at end of file
diff --git a/dom/base/TimerClamping.h b/dom/base/TimerClamping.h
new file mode 100755
index 000000000..2ffd6add5
--- /dev/null
+++ b/dom/base/TimerClamping.h
@@ -0,0 +1,22 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* 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/. */
+
+#ifndef TimerClamping_h___
+#define TimerClamping_h___
+
+namespace mozilla {
+
+class TimerClamping
+{
+public:
+  static double ReduceSTimeValue(double aTime);
+  static double ReduceMsTimeValue(double aTime);
+  static double ReduceUsTimeValue(double aTime);
+};
+
+}
+
+#endif /* TimerClamping_h___ */
\ No newline at end of file
diff --git a/dom/base/moz.build b/dom/base/moz.build
index 0bc9902e4..0fb345d22 100644..100755
--- a/dom/base/moz.build
+++ b/dom/base/moz.build
@@ -143,6 +143,7 @@ EXPORTS.mozilla += [
     'CORSMode.h',
     'FeedWriterEnabled.h',
     'TextInputProcessor.h',
+    'TimerClamping.h',
     'UseCounter.h',
 ]
 
@@ -363,6 +364,7 @@ UNIFIED_SOURCES += [
     'TextInputProcessor.cpp',
     'ThirdPartyUtil.cpp',
     'Timeout.cpp',
+    'TimerClamping.cpp',
     'TreeWalker.cpp',
     'WebKitCSSMatrix.cpp',
     'WebSocket.cpp',
@@ -411,7 +413,7 @@ EXTRA_COMPONENTS += [
 ]
 
 # Firefox for Android provides an alternate version of this component
-if CONFIG['MOZ_BUILD_APP'] != 'mobile/android':
+if not CONFIG['MOZ_FENNEC']:
     EXTRA_COMPONENTS += [
         'SiteSpecificUserAgent.js',
         'SiteSpecificUserAgent.manifest',
@@ -472,7 +474,7 @@ include('/ipc/chromium/chromium-config.mozbuild')
 
 FINAL_LIBRARY = 'xul'
 
-if CONFIG['MOZ_BUILD_APP'] in ['mobile/android', 'xulrunner'] or CONFIG['MOZ_PHOENIX']:
+if CONFIG['MOZ_PHOENIX'] or CONFIG['MOZ_FENNEC'] or CONFIG['MOZ_XULRUNNER']:
     DEFINES['HAVE_SIDEBAR'] = True
 
 if CONFIG['MOZ_X11']:
diff --git a/dom/base/nsContentList.cpp b/dom/base/nsContentList.cpp
index 09e949009..43e65777d 100644
--- a/dom/base/nsContentList.cpp
+++ b/dom/base/nsContentList.cpp
@@ -254,19 +254,6 @@ const nsCacheableFuncStringContentList::ContentListType
   nsCacheableFuncStringHTMLCollection::sType = nsCacheableFuncStringContentList::eHTMLCollection;
 #endif
 
-JSObject*
-nsCacheableFuncStringNodeList::WrapObject(JSContext *cx, JS::Handle<JSObject*> aGivenProto)
-{
-  return NodeListBinding::Wrap(cx, this, aGivenProto);
-}
-
-
-JSObject*
-nsCacheableFuncStringHTMLCollection::WrapObject(JSContext *cx, JS::Handle<JSObject*> aGivenProto)
-{
-  return HTMLCollectionBinding::Wrap(cx, this, aGivenProto);
-}
-
 // Hashtable for storing nsCacheableFuncStringContentList
 static PLDHashTable* gFuncStringContentListHashTable;
 
@@ -379,6 +366,7 @@ NS_GetFuncStringHTMLCollection(nsINode* aRootNode,
                                                                        aString);
 }
 
+//-----------------------------------------------------
 // nsContentList implementation
 
 nsContentList::nsContentList(nsINode* aRootNode,
@@ -660,7 +648,7 @@ nsContentList::AttributeChanged(nsIDocument *aDocument, Element* aElement,
                                 const nsAttrValue* aOldValue)
 {
   NS_PRECONDITION(aElement, "Must have a content node to work with");
-  
+
   if (!mFunc || !mFuncMayDependOnAttr || mState == LIST_DIRTY ||
       !MayContainRelevantNodes(aElement->GetParentNode()) ||
       !nsContentUtils::IsInSameAnonymousTree(mRootNode, aElement)) {
@@ -806,7 +794,7 @@ nsContentList::ContentInserted(nsIDocument *aDocument,
 
   ASSERT_IN_SYNC;
 }
- 
+
 void
 nsContentList::ContentRemoved(nsIDocument *aDocument,
                               nsIContent* aContainer,
@@ -1075,3 +1063,128 @@ nsContentList::AssertInSync()
   NS_ASSERTION(cnt == mElements.Length(), "Too few elements");
 }
 #endif
+
+//-----------------------------------------------------
+// nsCacheableFuncStringNodeList
+
+JSObject*
+nsCacheableFuncStringNodeList::WrapObject(JSContext *cx, JS::Handle<JSObject*> aGivenProto)
+{
+  return NodeListBinding::Wrap(cx, this, aGivenProto);
+}
+
+//-----------------------------------------------------
+// nsCacheableFuncStringHTMLCollection
+
+JSObject*
+nsCacheableFuncStringHTMLCollection::WrapObject(JSContext *cx, JS::Handle<JSObject*> aGivenProto)
+{
+  return HTMLCollectionBinding::Wrap(cx, this, aGivenProto);
+}
+
+//-----------------------------------------------------
+// nsLabelsNodeList
+
+JSObject*
+nsLabelsNodeList::WrapObject(JSContext *cx, JS::Handle<JSObject*> aGivenProto)
+{
+  return NodeListBinding::Wrap(cx, this, aGivenProto);
+}
+
+void
+nsLabelsNodeList::AttributeChanged(nsIDocument* aDocument, Element* aElement,
+                                   int32_t aNameSpaceID, nsIAtom* aAttribute,
+                                   int32_t aModType,
+                                   const nsAttrValue* aOldValue)
+{
+  MOZ_ASSERT(aElement, "Must have a content node to work with");
+  if (mState == LIST_DIRTY ||
+      !nsContentUtils::IsInSameAnonymousTree(mRootNode, aElement)) {
+    return;
+  }
+
+  // We need to handle input type changes to or from "hidden".
+  if (aElement->IsHTMLElement(nsGkAtoms::input) &&
+      aAttribute == nsGkAtoms::type && aNameSpaceID == kNameSpaceID_None) {
+    SetDirty();
+    return;
+  }
+}
+
+void
+nsLabelsNodeList::ContentAppended(nsIDocument* aDocument,
+                                  nsIContent* aContainer,
+                                  nsIContent* aFirstNewContent,
+                                  int32_t aNewIndexInContainer)
+{
+  // If a labelable element is moved to outside or inside of
+  // nested associated labels, we're gonna have to modify
+  // the content list.
+  if (mState != LIST_DIRTY ||
+      nsContentUtils::IsInSameAnonymousTree(mRootNode, aContainer)) {
+    SetDirty();
+    return;
+  }
+}
+
+void
+nsLabelsNodeList::ContentInserted(nsIDocument* aDocument,
+                                  nsIContent* aContainer,
+                                  nsIContent* aChild,
+                                  int32_t aIndexInContainer)
+{
+  // If a labelable element is moved to outside or inside of
+  // nested associated labels, we're gonna have to modify
+  // the content list.
+  if (mState != LIST_DIRTY ||
+      nsContentUtils::IsInSameAnonymousTree(mRootNode, aChild)) {
+    SetDirty();
+    return;
+  }
+}
+
+void
+nsLabelsNodeList::ContentRemoved(nsIDocument* aDocument,
+                                 nsIContent* aContainer,
+                                 nsIContent* aChild,
+                                 int32_t aIndexInContainer,
+                                 nsIContent* aPreviousSibling)
+{
+  // If a labelable element is removed, we're gonna have to clean
+  // the content list.
+  if (mState != LIST_DIRTY ||
+      nsContentUtils::IsInSameAnonymousTree(mRootNode, aChild)) {
+    SetDirty();
+    return;
+  }
+}
+
+void
+nsLabelsNodeList::MaybeResetRoot(nsINode* aRootNode)
+{
+  MOZ_ASSERT(aRootNode, "Must have root");
+  if (mRootNode == aRootNode) {
+    return;
+  }
+
+  if (mRootNode) {
+    mRootNode->RemoveMutationObserver(this);
+  }
+  mRootNode = aRootNode;
+  mRootNode->AddMutationObserver(this);
+  SetDirty();
+}
+
+void
+nsLabelsNodeList::PopulateSelf(uint32_t aNeededLength)
+{
+  MOZ_ASSERT(mRootNode, "Must have root");
+
+  // Start searching at the root.
+  nsINode* cur = mRootNode;
+  if (mElements.IsEmpty() && cur->IsElement() && Match(cur->AsElement())) {
+    mElements.AppendElement(cur->AsElement());
+  }
+
+  nsContentList::PopulateSelf(aNeededLength);
+}
diff --git a/dom/base/nsContentList.h b/dom/base/nsContentList.h
index 3878074b2..83d27da95 100644
--- a/dom/base/nsContentList.h
+++ b/dom/base/nsContentList.h
@@ -371,9 +371,9 @@ protected:
    * traversed the whole document (or both).
    *
    * @param aNeededLength the length the list should have when we are
-   *        done (unless it exhausts the document)   
+   *        done (unless it exhausts the document)
    */
-  void PopulateSelf(uint32_t aNeededLength);
+  virtual void PopulateSelf(uint32_t aNeededLength);
 
   /**
    * @param  aContainer a content node which must be a descendant of
@@ -584,4 +584,40 @@ public:
 #endif
 };
 
+class nsLabelsNodeList final : public nsContentList
+{
+public:
+  nsLabelsNodeList(nsINode* aRootNode,
+                   nsContentListMatchFunc aFunc,
+                   nsContentListDestroyFunc aDestroyFunc,
+                   void* aData)
+    : nsContentList(aRootNode, aFunc, aDestroyFunc, aData)
+  {
+  }
+
+  NS_DECL_NSIMUTATIONOBSERVER_ATTRIBUTECHANGED
+  NS_DECL_NSIMUTATIONOBSERVER_CONTENTAPPENDED
+  NS_DECL_NSIMUTATIONOBSERVER_CONTENTINSERTED
+  NS_DECL_NSIMUTATIONOBSERVER_CONTENTREMOVED
+
+  virtual JSObject* WrapObject(JSContext *cx, JS::Handle<JSObject*> aGivenProto) override;
+
+ /**
+  * Reset root, mutation observer, and clear content list
+  * if the root has been changed.
+  *
+  * @param aRootNode The node under which to limit our search.
+  */
+  void MaybeResetRoot(nsINode* aRootNode);
+
+private:
+ /**
+  * Start searching at the last one if we already have nodes, otherwise
+  * start searching at the root.
+  *
+  * @param aNeededLength The list of length should have when we are
+  *                      done (unless it exhausts the document).
+  */
+  void PopulateSelf(uint32_t aNeededLength) override;
+};
 #endif // nsContentList_h___
diff --git a/dom/base/nsContentListDeclarations.h b/dom/base/nsContentListDeclarations.h
index db3a09036..a5e0e3691 100644
--- a/dom/base/nsContentListDeclarations.h
+++ b/dom/base/nsContentListDeclarations.h
@@ -18,6 +18,12 @@ class nsINode;
 class nsString;
 class nsAString;
 
+namespace mozilla {
+namespace dom {
+class Element;
+} // namespace dom
+} // namespace mozilla
+
 // Magic namespace id that means "match all namespaces".  This is
 // negative so it won't collide with actual namespace constants.
 #define kNameSpaceID_Wildcard INT32_MIN
@@ -26,7 +32,7 @@ class nsAString;
 // arbitrary matching algorithm.  aContent is the content that may
 // match the list, while aNamespaceID, aAtom, and aData are whatever
 // was passed to the list's constructor.
-typedef bool (*nsContentListMatchFunc)(nsIContent* aContent,
+typedef bool (*nsContentListMatchFunc)(mozilla::dom::Element* aElement,
                                        int32_t aNamespaceID,
                                        nsIAtom* aAtom,
                                        void* aData);
diff --git a/dom/base/nsContentUtils.cpp b/dom/base/nsContentUtils.cpp
index 1cc352685..02c6bf1de 100644
--- a/dom/base/nsContentUtils.cpp
+++ b/dom/base/nsContentUtils.cpp
@@ -6287,11 +6287,11 @@ struct ClassMatchingInfo {
 
 // static
 bool
-nsContentUtils::MatchClassNames(nsIContent* aContent, int32_t aNamespaceID,
+nsContentUtils::MatchClassNames(Element* aElement, int32_t aNamespaceID,
                                 nsIAtom* aAtom, void* aData)
 {
   // We can't match if there are no class names
-  const nsAttrValue* classAttr = aContent->GetClasses();
+  const nsAttrValue* classAttr = aElement->GetClasses();
   if (!classAttr) {
     return false;
   }
diff --git a/dom/base/nsContentUtils.h b/dom/base/nsContentUtils.h
index f688eeecf..0a293d73e 100644
--- a/dom/base/nsContentUtils.h
+++ b/dom/base/nsContentUtils.h
@@ -2753,7 +2753,8 @@ private:
 
   static void DropFragmentParsers();
 
-  static bool MatchClassNames(nsIContent* aContent, int32_t aNamespaceID,
+  static bool MatchClassNames(mozilla::dom::Element* aElement,
+                              int32_t aNamespaceID,
                               nsIAtom* aAtom, void* aData);
   static void DestroyClassNameArray(void* aData);
   static void* AllocClassMatchingInfo(nsINode* aRootNode,
diff --git a/dom/base/nsDocument.cpp b/dom/base/nsDocument.cpp
index 8e6920a0e..eaea49b02 100644
--- a/dom/base/nsDocument.cpp
+++ b/dom/base/nsDocument.cpp
@@ -61,6 +61,7 @@
 #include "nsGenericHTMLElement.h"
 #include "mozilla/dom/CDATASection.h"
 #include "mozilla/dom/ProcessingInstruction.h"
+#include "nsDSURIContentListener.h"
 #include "nsDOMString.h"
 #include "nsNodeUtils.h"
 #include "nsLayoutUtils.h" // for GetFrameForPoint
@@ -2456,6 +2457,15 @@ nsDocument::StartDocumentLoad(const char* aCommand, nsIChannel* aChannel,
     NS_ENSURE_SUCCESS(rv, rv);
   }
 
+  // XFO needs to be checked after CSP because it is ignored if
+  // the CSP defines frame-ancestors.
+  if (!nsDSURIContentListener::CheckFrameOptions(aChannel, docShell, NodePrincipal())) {
+    MOZ_LOG(gCspPRLog, LogLevel::Debug,
+            ("XFO doesn't like frame's ancestry, not loading."));
+    // stop!  ERROR page!
+    aChannel->Cancel(NS_ERROR_CSP_FRAME_ANCESTOR_VIOLATION);
+  }
+
   return NS_OK;
 }
 
@@ -4330,6 +4340,7 @@ nsDocument::SetScopeObject(nsIGlobalObject* aGlobal)
   }
 }
 
+#ifdef MOZ_EME
 static void
 CheckIfContainsEMEContent(nsISupports* aSupports, void* aContainsEME)
 {
@@ -4353,6 +4364,7 @@ nsDocument::ContainsEMEContent()
                              static_cast<void*>(&containsEME));
   return containsEME;
 }
+#endif // MOZ_EME
 
 static void
 CheckIfContainsMSEContent(nsISupports* aSupports, void* aContainsMSE)
@@ -8380,11 +8392,13 @@ nsDocument::CanSavePresentation(nsIRequest *aNewRequest)
   }
 #endif // MOZ_WEBRTC
 
+#ifdef MOZ_EME
   // Don't save presentations for documents containing EME content, so that
   // CDMs reliably shutdown upon user navigation.
   if (ContainsEMEContent()) {
     return false;
   }
+#endif
 
   // Don't save presentations for documents containing MSE content, to
   // reduce memory usage.
diff --git a/dom/base/nsDocument.h b/dom/base/nsDocument.h
index 17d936055..3725b3c18 100644
--- a/dom/base/nsDocument.h
+++ b/dom/base/nsDocument.h
@@ -1267,7 +1267,9 @@ public:
 
   js::ExpandoAndGeneration mExpandoAndGeneration;
 
+#ifdef MOZ_EME
   bool ContainsEMEContent();
+#endif
 
   bool ContainsMSEContent();
 
@@ -1491,7 +1493,6 @@ private:
   void PostUnblockOnloadEvent();
   void DoUnblockOnload();
 
-  nsresult CheckFrameOptions();
   nsresult InitCSP(nsIChannel* aChannel);
 
   /**
diff --git a/dom/base/nsDocumentEncoder.cpp b/dom/base/nsDocumentEncoder.cpp
index 0a3570962..84b128b15 100644
--- a/dom/base/nsDocumentEncoder.cpp
+++ b/dom/base/nsDocumentEncoder.cpp
@@ -481,7 +481,7 @@ nsDocumentEncoder::SerializeToStringRecursive(nsINode* aNode,
   }
 
   if (!aDontSerializeRoot) {
-    rv = SerializeNodeEnd(node, aStr);
+    rv = SerializeNodeEnd(maybeFixedNode, aStr);
     NS_ENSURE_SUCCESS(rv, rv);
   }
 
diff --git a/dom/base/nsGkAtomList.h b/dom/base/nsGkAtomList.h
index 0b76b2bea..e4ae7ede8 100644
--- a/dom/base/nsGkAtomList.h
+++ b/dom/base/nsGkAtomList.h
@@ -526,6 +526,7 @@ GK_ATOM(keytext, "keytext")
 GK_ATOM(keyup, "keyup")
 GK_ATOM(kind, "kind")
 GK_ATOM(label, "label")
+GK_ATOM(labels, "labels")
 GK_ATOM(lang, "lang")
 GK_ATOM(language, "language")
 GK_ATOM(last, "last")
@@ -950,6 +951,7 @@ GK_ATOM(onupdateready, "onupdateready")
 GK_ATOM(onupgradeneeded, "onupgradeneeded")
 GK_ATOM(onussdreceived, "onussdreceived")
 GK_ATOM(onversionchange, "onversionchange")
+GK_ATOM(onvisibilitychange, "onvisibilitychange")
 GK_ATOM(onvoicechange, "onvoicechange")
 GK_ATOM(onvoiceschanged, "onvoiceschanged")
 GK_ATOM(onvrdisplayconnect, "onvrdisplayconnect")
@@ -1449,6 +1451,7 @@ GK_ATOM(font_style, "font-style")
 GK_ATOM(font_variant, "font-variant")
 GK_ATOM(foreignObject, "foreignObject")
 GK_ATOM(fractalNoise, "fractalNoise")
+GK_ATOM(fr, "fr")
 GK_ATOM(fx, "fx")
 GK_ATOM(fy, "fy")
 GK_ATOM(G, "G")
diff --git a/dom/base/nsGlobalWindow.cpp b/dom/base/nsGlobalWindow.cpp
index 8ff4b84ce..f784031f6 100644
--- a/dom/base/nsGlobalWindow.cpp
+++ b/dom/base/nsGlobalWindow.cpp
@@ -6187,7 +6187,7 @@ nsGlobalWindow::GetScrollMaxY(ErrorResult& aError)
   FORWARD_TO_OUTER_OR_THROW(GetScrollBoundaryOuter, (eSideBottom), aError, 0);
 }
 
-CSSIntPoint
+CSSPoint
 nsGlobalWindow::GetScrollXY(bool aDoFlush)
 {
   MOZ_ASSERT(IsOuterWindow());
@@ -6211,30 +6211,30 @@ nsGlobalWindow::GetScrollXY(bool aDoFlush)
     return GetScrollXY(true);
   }
 
-  return sf->GetScrollPositionCSSPixels();
+  return CSSPoint::FromAppUnits(scrollPos);
 }
 
-int32_t
+double
 nsGlobalWindow::GetScrollXOuter()
 {
   MOZ_RELEASE_ASSERT(IsOuterWindow());
   return GetScrollXY(false).x;
 }
 
-int32_t
+double
 nsGlobalWindow::GetScrollX(ErrorResult& aError)
 {
   FORWARD_TO_OUTER_OR_THROW(GetScrollXOuter, (), aError, 0);
 }
 
-int32_t
+double
 nsGlobalWindow::GetScrollYOuter()
 {
   MOZ_RELEASE_ASSERT(IsOuterWindow());
   return GetScrollXY(false).y;
 }
 
-int32_t
+double
 nsGlobalWindow::GetScrollY(ErrorResult& aError)
 {
   FORWARD_TO_OUTER_OR_THROW(GetScrollYOuter, (), aError, 0);
diff --git a/dom/base/nsGlobalWindow.h b/dom/base/nsGlobalWindow.h
index eab91c2e4..dbceeab74 100644
--- a/dom/base/nsGlobalWindow.h
+++ b/dom/base/nsGlobalWindow.h
@@ -1050,15 +1050,15 @@ public:
   void SetInnerHeight(JSContext* aCx, JS::Handle<JS::Value> aValue,
                       mozilla::dom::CallerType aCallerType,
                       mozilla::ErrorResult& aError);
-  int32_t GetScrollXOuter();
-  int32_t GetScrollX(mozilla::ErrorResult& aError);
-  int32_t GetPageXOffset(mozilla::ErrorResult& aError)
+  double GetScrollXOuter();
+  double GetScrollX(mozilla::ErrorResult& aError);
+  double GetPageXOffset(mozilla::ErrorResult& aError)
   {
     return GetScrollX(aError);
   }
-  int32_t GetScrollYOuter();
-  int32_t GetScrollY(mozilla::ErrorResult& aError);
-  int32_t GetPageYOffset(mozilla::ErrorResult& aError)
+  double GetScrollYOuter();
+  double GetScrollY(mozilla::ErrorResult& aError);
+  double GetPageYOffset(mozilla::ErrorResult& aError)
   {
     return GetScrollY(aError);
   }
@@ -1579,7 +1579,7 @@ public:
   // If aDoFlush is true, we'll flush our own layout; otherwise we'll try to
   // just flush our parent and only flush ourselves if we think we need to.
   // Outer windows only.
-  mozilla::CSSIntPoint GetScrollXY(bool aDoFlush);
+  mozilla::CSSPoint GetScrollXY(bool aDoFlush);
 
   int32_t GetScrollBoundaryOuter(mozilla::Side aSide);
 
diff --git a/dom/base/nsIContent.h b/dom/base/nsIContent.h
index f05c47a61..405090865 100644
--- a/dom/base/nsIContent.h
+++ b/dom/base/nsIContent.h
@@ -862,18 +862,6 @@ public:
   }
 
   /**
-   * Get the class list of this content node (this corresponds to the
-   * value of the class attribute).  This may be null if there are no
-   * classes, but that's not guaranteed.
-   */
-  const nsAttrValue* GetClasses() const {
-    if (HasFlag(NODE_MAY_HAVE_CLASS)) {
-      return DoGetClasses();
-    }
-    return nullptr;
-  }
-
-  /**
    * Walk aRuleWalker over the content style rules (presentational
    * hint rules) for this content node.
    */
@@ -990,13 +978,6 @@ protected:
    */
   nsIAtom* DoGetID() const;
 
-private:
-  /**
-   * Hook for implementing GetClasses.  This is guaranteed to only be
-   * called if the NODE_MAY_HAVE_CLASS flag is set.
-   */
-  const nsAttrValue* DoGetClasses() const;
-
 public:
 #ifdef DEBUG
   /**
diff --git a/dom/base/nsPluginArray.cpp b/dom/base/nsPluginArray.cpp
index b9c946ca3..5b9378ae0 100644
--- a/dom/base/nsPluginArray.cpp
+++ b/dom/base/nsPluginArray.cpp
@@ -372,9 +372,21 @@ nsPluginArray::EnsurePlugins()
           nsCString permString;
           nsresult rv = pluginHost->GetPermissionStringForTag(pluginTag, 0, permString);
           if (rv == NS_OK) {
-            nsIPrincipal* principal = mWindow->GetExtantDoc()->NodePrincipal();
-            nsCOMPtr<nsIPermissionManager> permMgr = services::GetPermissionManager();
-            permMgr->TestPermissionFromPrincipal(principal, permString.get(), &permission);
+            nsCOMPtr<nsIDocument> currentDoc = mWindow->GetExtantDoc();
+
+            // The top-level content document gets the final say on whether or not
+            // a plugin is going to be hidden or not, regardless of the origin
+            // that a subframe is hosted at. This is to avoid spamming the user
+            // with the hidden plugin notification bar when third-party iframes
+            // attempt to access navigator.plugins after the user has already
+            // expressed that the top-level document has this permission.
+            nsCOMPtr<nsIDocument> topDoc = currentDoc->GetTopLevelContentDocument();
+
+            if (topDoc) {
+              nsIPrincipal* principal = topDoc->NodePrincipal();
+              nsCOMPtr<nsIPermissionManager> permMgr = services::GetPermissionManager();
+              permMgr->TestPermissionFromPrincipal(principal, permString.get(), &permission);
+            }
           }
         }
       }
diff --git a/dom/base/nsXHTMLContentSerializer.cpp b/dom/base/nsXHTMLContentSerializer.cpp
index 0dc31d7ae..111ed46c7 100644..100755
--- a/dom/base/nsXHTMLContentSerializer.cpp
+++ b/dom/base/nsXHTMLContentSerializer.cpp
@@ -306,7 +306,7 @@ nsXHTMLContentSerializer::SerializeAttributes(nsIContent* aContent,
         continue;
     }
 
-    BorrowedAttrInfo info = aContent->GetAttrInfoAt(index);
+    mozilla::dom::BorrowedAttrInfo info = aContent->GetAttrInfoAt(index);
     const nsAttrName* name = info.mName;
 
     int32_t namespaceID = name->NamespaceID();
diff --git a/dom/base/test/test_bug1375050.html b/dom/base/test/test_bug1375050.html
new file mode 100644
index 000000000..b91b859d0
--- /dev/null
+++ b/dom/base/test/test_bug1375050.html
@@ -0,0 +1,33 @@
+<!DOCTYPE HTML>

+<html>

+<!--

+https://bugzilla.mozilla.org/show_bug.cgi?id=1375050

+-->

+<head>

+  <meta charset="utf-8">

+  <title>Test for Bug 1375050</title>

+  <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>

+  <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>

+  <script type="application/javascript">

+      try { o1 = document.createElement('input');  } catch(e) { console.log(e); };

+      try { o2 = document.createElement('col');  } catch(e) { console.log(e); };

+      try { o4 = document.createRange(); } catch(e) { console.log(e); };

+      try { document.documentElement.appendChild(o1); } catch(e) { console.log(e); };

+      try { for (let p in o1) { let x = o1[p] }; } catch(e) { console.log(e); };

+      try { o4.selectNode(o1); } catch(e) { console.log(e); };

+      try { o6 = document.createComment(" x"); } catch(e) { console.log(e); }

+      try { o4.surroundContents(o6); } catch(e) { console.log(e); }

+      try { o7 = document.implementation.createDocument('', '', null).adoptNode(o1); } catch(e) {  console.log(e);};

+      try { o2.appendChild(o1); } catch(e) { console.log(e); };

+      ok(true, "Didn't crash.");

+  </script>

+</head>

+<body>

+<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1375050">Mozilla Bug 1375050</a>

+<p id="display"></p>

+<div id="content" style="display: none">

+</div>

+<pre id="test">

+</pre>

+</body>

+</html>

diff --git a/dom/base/test/test_bug403852.html b/dom/base/test/test_bug403852.html
index 30192cb1b..592711500 100644
--- a/dom/base/test/test_bug403852.html
+++ b/dom/base/test/test_bug403852.html
@@ -38,7 +38,8 @@ function onOpened(message) {
   ok("lastModifiedDate" in domFile, "lastModifiedDate must be present");
 
   var d = new Date(message.mtime);
-  is(d.getTime(), domFile.lastModifiedDate.getTime(), "lastModifiedDate should be the same");
+  // Commented out: lastModifiedDate is rounded because it is a DOM API, message is a special-powers Chrome thing
+  // is(d.getTime(), domFile.lastModifiedDate.getTime(), "lastModifiedDate should be the same");
 
   var x = new Date();
 
@@ -53,8 +54,8 @@ function onOpened(message) {
   ok((x.getTime() <= y.getTime()) && (y.getTime() <= z.getTime()), "lastModifiedDate of file which does not have last modified date should be current time");
 
 
-  var d = new Date(message.fileDate);
-  is(d.getTime(), message.fileWithDate.lastModifiedDate.getTime(), "lastModifiedDate should be the same when lastModified is set: " + message.fileWithDate.lastModified);
+  // var d = new Date(message.fileDate);
+  // is(d.getTime(), message.fileWithDate.lastModifiedDate.getTime(), "lastModifiedDate should be the same when lastModified is set: " + message.fileWithDate.lastModified);
 
   script.destroy();
   SimpleTest.finish();
diff --git a/dom/base/test/test_file_negative_date.html b/dom/base/test/test_file_negative_date.html
index ebfa9bd0d..26cf3b82e 100644
--- a/dom/base/test/test_file_negative_date.html
+++ b/dom/base/test/test_file_negative_date.html
@@ -22,13 +22,13 @@ https://bugzilla.mozilla.org/show_bug.cgi?id=1158437
 
 var blob = new Blob(['hello world']);
 var f1 = new File([blob], 'f1.txt', { lastModified: 0 });
-var f2 = new File([blob], 'f2.txt', { lastModified: -1 });
+var f2 = new File([blob], 'f2.txt', { lastModified: -2 });
 var f3 = new File([blob], 'f3.txt', { lastModified: -1000 });
 
 is(f1.lastModified, 0, "lastModified == 0 is supported");
 ok(f1.lastModifiedDate.toString(), (new Date(0)).toString(), "Correct f1.lastModifiedDate value");
-is(f2.lastModified, -1, "lastModified == -1 is supported");
-ok(f2.lastModifiedDate.toString(), (new Date(-1)).toString(), "Correct f2.lastModifiedDate value");
+is(f2.lastModified, -2, "lastModified == -2 is supported");
+ok(f2.lastModifiedDate.toString(), (new Date(-2)).toString(), "Correct f2.lastModifiedDate value");
 is(f3.lastModified, -1000, "lastModified == -1000 is supported");
 ok(f3.lastModifiedDate.toString(), (new Date(-1000)).toString(), "Correct f3.lastModifiedDate value");
 
diff --git a/dom/base/test/test_viewport_scroll.html b/dom/base/test/test_viewport_scroll.html
index 9b812360b..7db02b781 100644
--- a/dom/base/test/test_viewport_scroll.html
+++ b/dom/base/test/test_viewport_scroll.html
@@ -28,10 +28,10 @@ function subtest(winProp, elemProp, win, correctElement, elemToSet, otherElem1,
   win.scrollTo(50, 50);
   elemToSet[elemProp] = 100;
   if (elemToSet == correctElement) {
-    is(win[winProp], 100, "Setting " + elemToSet.name + "." + elemProp + " should scroll");
+    is(Math.round(win[winProp]), 100, "Setting " + elemToSet.name + "." + elemProp + " should scroll");
     is(elemToSet[elemProp], 100, "Reading back " + elemToSet.name + "." + elemProp + " after scrolling");
   } else {
-    is(win[winProp], 50, "Setting " + elemToSet.name + "." + elemProp + " should not scroll");
+    is(Math.round(win[winProp]), 50, "Setting " + elemToSet.name + "." + elemProp + " should not scroll");
     is(elemToSet[elemProp], 0, "Reading back " + elemToSet.name + "." + elemProp + " after not scrolling");
   }
   if (otherElem1 == correctElement) {