Master merge

This merges master into release to replace Redwood.

# Conflicts:
#	CLOBBER
#	build/moz.configure/old.configure
#	config/milestone.txt
#	config/moz.build
#	config/system-headers
#	dom/abort/AbortController.cpp
#	dom/abort/AbortController.h
#	dom/abort/AbortSignal.cpp
#	dom/abort/AbortSignal.h
#	dom/abort/moz.build
#	dom/abort/tests/moz.build
#	dom/animation/KeyframeEffect.cpp
#	dom/base/CustomElementRegistry.cpp
#	dom/base/DocGroup.cpp
#	dom/base/ResizeObserverController.cpp
#	dom/base/ResizeObserverController.h
#	dom/base/nsContentUtils.cpp
#	dom/base/nsContentUtils.h
#	dom/base/nsDocument.cpp
#	dom/base/nsIDocument.h
#	dom/fetch/FetchObserver.cpp
#	dom/fetch/FetchObserver.h
#	dom/heapsnapshot/AutoMemMap.cpp
#	dom/heapsnapshot/AutoMemMap.h
#	dom/heapsnapshot/CoreDump.proto
#	dom/heapsnapshot/HeapSnapshot.cpp
#	dom/heapsnapshot/HeapSnapshotTempFileHelperChild.h
#	dom/heapsnapshot/HeapSnapshotTempFileHelperParent.cpp
#	dom/heapsnapshot/HeapSnapshotTempFileHelperParent.h
#	dom/heapsnapshot/PHeapSnapshotTempFileHelper.ipdl
#	dom/heapsnapshot/moz.build
#	dom/heapsnapshot/tests/gtest/moz.build
#	dom/html/nsGenericHTMLElement.h
#	dom/media/platforms/PlatformDecoderModule.h
#	dom/media/platforms/moz.build
#	dom/script/ModuleLoadRequest.cpp
#	dom/script/ModuleLoadRequest.h
#	dom/script/ModuleScript.cpp
#	dom/script/ModuleScript.h
#	dom/script/ScriptElement.cpp
#	dom/script/ScriptElement.h
#	dom/script/ScriptLoadHandler.cpp
#	dom/script/ScriptLoadHandler.h
#	dom/script/ScriptLoader.cpp
#	dom/script/ScriptLoader.h
#	dom/script/ScriptSettings.cpp
#	dom/script/ScriptSettings.h
#	dom/script/nsIScriptElement.h
#	dom/script/nsIScriptLoaderObserver.idl
#	dom/webidl/HTMLLinkElement.webidl
#	gfx/gl/moz.build
#	gfx/graphite2/src/moz.build
#	gfx/layers/moz.build
#	js/ductwork/inspector/moz.build
#	js/ductwork/moz.build
#	js/src/gc/Heap.h
#	js/src/moz.build
#	js/src/vm/UnboxedObject-inl.h
#	js/src/vm/UnboxedObject.cpp
#	js/src/vm/UnboxedObject.h
#	layout/base/crashtests/crashtests.list
#	layout/build/moz.build
#	layout/generic/AspectRatio.h
#	layout/generic/crashtests/crashtests.list
#	layout/reftests/bidi/reftest-stylo.list
#	layout/reftests/reftest-stylo.list
#	layout/reftests/table-bordercollapse/reftest.list
#	layout/reftests/writing-mode/reftest-stylo.list
#	layout/style/StyleSheet.cpp
#	layout/style/nsRuleNode.cpp
#	layout/style/nsStyleStruct.cpp
#	layout/style/nsStyleStruct.h
#	modules/libpref/init/all.js
#	nsprpub/pr/src/linking/prlink.c
#	parser/html/java/htmlparser/src/nu/validator/htmlparser/impl/AttributeName.java
#	parser/html/java/htmlparser/src/nu/validator/htmlparser/impl/ElementName.java
#	parser/html/nsHtml5AtomList.h
#	parser/html/nsHtml5AttributeName.cpp
#	parser/html/nsHtml5AttributeName.h
#	parser/html/nsHtml5ElementName.cpp
#	parser/html/nsHtml5ElementName.h
#	parser/html/nsHtml5TreeBuilderCppSupplement.h
#	parser/htmlparser/nsElementTable.cpp
#	parser/htmlparser/nsHTMLTagList.h
#	security/nss/lib/nss/nss.h
#	security/nss/lib/softoken/pkcs11.c
#	security/nss/lib/softoken/softkver.h
#	security/nss/lib/util/nssutil.h
#	testing/web-platform/tests/tools/html5lib/html5lib/html5parser.py
#	testing/web-platform/tests/tools/html5lib/html5lib/treebuilders/_base.py
#	toolkit/modules/AppConstants.jsm

1 files changed, 81 insertions, 0 deletions

diff --git a/dom/html/HTMLSlotElement.h b/dom/html/HTMLSlotElement.h
new file mode 100644
index 000000000..f20e6dc7f
--- /dev/null
+++ b/dom/html/HTMLSlotElement.h
@@ -0,0 +1,81 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* 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 mozilla_dom_HTMLSlotElement_h
+#define mozilla_dom_HTMLSlotElement_h
+
+#include "nsIDOMHTMLElement.h"
+#include "nsGenericHTMLElement.h"
+#include "nsTArray.h"
+
+namespace mozilla {
+namespace dom {
+
+struct AssignedNodesOptions;
+
+class HTMLSlotElement final : public nsGenericHTMLElement
+{
+public:
+  explicit HTMLSlotElement(already_AddRefed<mozilla::dom::NodeInfo>& aNodeInfo);
+  NS_IMPL_FROMCONTENT_HTML_WITH_TAG(HTMLSlotElement, slot)
+
+  NS_DECL_ISUPPORTS_INHERITED
+  NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(HTMLSlotElement, nsGenericHTMLElement)
+  virtual nsresult Clone(mozilla::dom::NodeInfo* aNodeInfo, nsINode** aResult) const override;
+
+  // nsIContent
+  virtual nsresult BindToTree(nsIDocument* aDocument, nsIContent* aParent,
+                              nsIContent* aBindingParent,
+                              bool aCompileEventHandlers) override;
+  virtual void UnbindFromTree(bool aDeep = true,
+                              bool aNullParent = true) override;
+
+  virtual nsresult BeforeSetAttr(int32_t aNameSpaceID, nsIAtom* aName,
+                                 const nsAttrValueOrString* aValue,
+                                 bool aNotify) override;
+  virtual nsresult AfterSetAttr(int32_t aNameSpaceID, nsIAtom* aName,
+                                const nsAttrValue* aValue,
+                                const nsAttrValue* aOldValue,
+                                bool aNotify) override;
+
+  // WebIDL
+  void SetName(const nsAString& aName, ErrorResult& aRv)
+  {
+    SetHTMLAttr(nsGkAtoms::name, aName, aRv);
+  }
+
+  void GetName(nsAString& aName)
+  {
+    GetHTMLAttr(nsGkAtoms::name, aName);
+  }
+
+  void AssignedNodes(const AssignedNodesOptions& aOptions,
+                     nsTArray<RefPtr<nsINode>>& aNodes);
+
+  void AssignedElements(const AssignedNodesOptions& aOptions,
+                        nsTArray<RefPtr<Element>>& aNodes);
+
+  // Helper methods
+  const nsTArray<RefPtr<nsINode>>& AssignedNodes() const;
+  void InsertAssignedNode(uint32_t aIndex, nsINode* aNode);
+  void AppendAssignedNode(nsINode* aNode);
+  void RemoveAssignedNode(nsINode* aNode);
+  void ClearAssignedNodes();
+
+  void EnqueueSlotChangeEvent() const;
+  void FireSlotChangeEvent();
+
+protected:
+  virtual ~HTMLSlotElement();
+  virtual JSObject*
+  WrapNode(JSContext* aCx, JS::Handle<JSObject*> aGivenProto) override;
+
+  nsTArray<RefPtr<nsINode>> mAssignedNodes;
+};
+
+} // namespace dom
+} // namespace mozilla
+
+#endif // mozilla_dom_HTMLSlotElement_h