1 files changed, 25 insertions, 39 deletions

diff --git a/dom/base/nsIDocument.h b/dom/base/nsIDocument.h
index 125816c954..b4fda21c1a 100644
--- a/dom/base/nsIDocument.h
+++ b/dom/base/nsIDocument.h
@@ -34,6 +34,7 @@
 #include "prclist.h"
 #include "mozilla/UniquePtr.h"
 #include "mozilla/CORSMode.h"
+#include "mozilla/dom/StyleScope.h"
 #include "mozilla/LinkedList.h"
 #include "mozilla/StyleBackendType.h"
 #include "mozilla/StyleSheet.h"
@@ -133,7 +134,6 @@ class DOMIntersectionObserver;
 class DOMStringList;
 class Element;
 struct ElementCreationOptions;
-struct ElementRegistrationOptions;
 class Event;
 class EventTarget;
 class FontFaceSet;
@@ -197,7 +197,8 @@ class nsContentList;
 
 // Document interface.  This is implemented by all document objects in
 // Gecko.
-class nsIDocument : public nsINode
+class nsIDocument : public nsINode,
+                    public mozilla::dom::StyleScope
 {
   typedef mozilla::dom::GlobalObject GlobalObject;
 
@@ -1070,40 +1071,24 @@ public:
    */
   virtual void EnsureOnDemandBuiltInUASheet(mozilla::StyleSheet* aSheet) = 0;
 
-  /**
-   * Get the number of (document) stylesheets
-   *
-   * @return the number of stylesheets
-   * @throws no exceptions
-   */
-  virtual int32_t GetNumberOfStyleSheets() const = 0;
+  nsINode& AsNode() final
+  {
+    return *this;
+  }
 
-  /**
-   * Get a particular stylesheet
-   * @param aIndex the index the stylesheet lives at.  This is zero-based
-   * @return the stylesheet at aIndex.  Null if aIndex is out of range.
-   * @throws no exceptions
-   */
-  virtual mozilla::StyleSheet* GetStyleSheetAt(int32_t aIndex) const = 0;
+  mozilla::dom::StyleSheetList* StyleSheets()
+  {
+    return &StyleScope::EnsureDOMStyleSheets();
+  }
 
   /**
    * Insert a sheet at a particular spot in the stylesheet list (zero-based)
    * @param aSheet the sheet to insert
-   * @param aIndex the index to insert at.  This index will be
-   *   adjusted for the "special" sheets.
+   * @param aIndex the index to insert at.
    * @throws no exceptions
    */
   virtual void InsertStyleSheetAt(mozilla::StyleSheet* aSheet,
-                                  int32_t aIndex) = 0;
-
-  /**
-   * Get the index of a particular stylesheet.  This will _always_
-   * consider the "special" sheets as part of the sheet list.
-   * @param aSheet the sheet to get the index of
-   * @return aIndex the index of the sheet in the full list
-   */
-  virtual int32_t GetIndexOfStyleSheet(
-      const mozilla::StyleSheet* aSheet) const = 0;
+                                  size_t aIndex) = 0;
 
   /**
    * Replace the stylesheets in aOldSheets with the stylesheets in
@@ -1154,11 +1139,13 @@ public:
    * sheets for this document, returns the index that aSheet should
    * be inserted at to maintain document ordering.
    *
+   * Type T has to cast to StyleSheet*.
+   *
    * Defined in nsIDocumentInlines.h.
    */
   template<typename T>
-  size_t FindDocStyleSheetInsertionPoint(const nsTArray<RefPtr<T>>& aDocSheets,
-                                         T* aSheet);
+  size_t FindDocStyleSheetInsertionPoint(const nsTArray<T>& aDocSheets,
+                                         const mozilla::StyleSheet& aSheet);
 
   /**
    * Get this document's CSSLoader.  This is guaranteed to not return null.
@@ -2587,14 +2574,6 @@ public:
 
   nsIDocument* GetTopLevelContentDocument();
 
-  virtual void
-    RegisterElement(JSContext* aCx, const nsAString& aName,
-                    const mozilla::dom::ElementRegistrationOptions& aOptions,
-                    JS::MutableHandle<JSObject*> aRetval,
-                    mozilla::ErrorResult& rv) = 0;
-  virtual already_AddRefed<mozilla::dom::CustomElementRegistry>
-    GetCustomElementRegistry() = 0;
-
   already_AddRefed<nsContentList>
   GetElementsByTagName(const nsAString& aTagName)
   {
@@ -2706,7 +2685,6 @@ public:
     return mVisibilityState;
   }
 #endif
-  virtual mozilla::dom::StyleSheetList* StyleSheets() = 0;
   void GetSelectedStyleSheetSet(nsAString& aSheetSet);
   virtual void SetSelectedStyleSheetSet(const nsAString& aSheetSet) = 0;
   virtual void GetLastStyleSheetSet(nsString& aSheetSet) = 0;
@@ -2894,6 +2872,11 @@ public:
     --mThrowOnDynamicMarkupInsertionCounter;
   }
 
+  bool IsWebComponentsEnabled() const
+  {
+    return mIsWebComponentsEnabled;
+  }
+
 protected:
   bool GetUseCounter(mozilla::UseCounter aUseCounter)
   {
@@ -3037,6 +3020,9 @@ protected:
   // container for per-context fonts (downloadable, SVG, etc.)
   RefPtr<mozilla::dom::FontFaceSet> mFontFaceSet;
 
+  // True if dom.webcomponents.enabled pref is set when document is created.
+  bool mIsWebComponentsEnabled : 1;
+
   // Compatibility mode
   nsCompatibility mCompatMode;