Add the CustomElementsRegistry interface behind the flag

third_party/WebKit/Source/core/frame/LocalDOMWindow.h

 /*
  * Copyright (C) 2006, 2007, 2009, 2010 Apple Inc. All rights reserved.
  * Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies)
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
@@ skipping 24 matching lines @@
 #include "core/frame/LocalFrame.h"
 #include "core/frame/LocalFrameLifecycleObserver.h"
 #include "platform/Supplementable.h"
 #include "platform/heap/Handle.h"
 
 #include "wtf/Assertions.h"
 #include "wtf/Forward.h"
 
 namespace blink {
 
+class CustomElementsRegistry;
 class DOMWindowEventQueue;
 class DOMWindowProperty;
 class DocumentInit;
 class EventListener;
 class EventQueue;
 class ExceptionState;
 class FrameConsole;
 class IntRect;
 class MessageEvent;
 class Page;
@@ skipping 83 matching lines @@
     void resizeBy(int x, int y) const override;
     void resizeTo(int width, int height) const override;
     MediaQueryList* matchMedia(const String&) override;
     CSSStyleDeclaration* getComputedStyle(Element*, const String& pseudoElt) const override;
     CSSRuleList* getMatchedCSSRules(Element*, const String& pseudoElt) const override;
     int requestAnimationFrame(FrameRequestCallback*) override;
     int webkitRequestAnimationFrame(FrameRequestCallback*) override;
     void cancelAnimationFrame(int id) override;
     int requestIdleCallback(IdleRequestCallback*, const IdleRequestOptions&) override;
     void cancelIdleCallback(int id) override;
+    CustomElementsRegistry* customElements() const override;
     void schedulePostMessage(MessageEvent*, SecurityOrigin* target, PassRefPtr<ScriptCallStack>);
 
     void registerProperty(DOMWindowProperty*);
     void unregisterProperty(DOMWindowProperty*);
 
     void reset();
 
     unsigned pendingUnloadEventListeners() const;
 
     bool allowPopUp(); // Call on first window, not target window.
@@ skipping 96 matching lines @@
     mutable Member<History> m_history;
     mutable Member<BarProp> m_locationbar;
     mutable Member<BarProp> m_menubar;
     mutable Member<BarProp> m_personalbar;
     mutable Member<BarProp> m_scrollbars;
     mutable Member<BarProp> m_statusbar;
     mutable Member<BarProp> m_toolbar;
     mutable Member<Console> m_console;
     mutable Member<Navigator> m_navigator;
     mutable Member<StyleMedia> m_media;
+    mutable Member<CustomElementsRegistry> m_customElements;
 
     String m_status;
     String m_defaultStatus;
 
     mutable Member<ApplicationCache> m_applicationCache;
 
     Member<DOMWindowEventQueue> m_eventQueue;
     RefPtr<SerializedScriptValue> m_pendingStateObject;
 
     HeapHashSet<Member<PostMessageTimer>> m_postMessageTimers;
 };
 
 DEFINE_TYPE_CASTS(LocalDOMWindow, DOMWindow, x, x->isLocalDOMWindow(), x.isLocalDOMWindow());
 
 inline String LocalDOMWindow::status() const
 {
     return m_status;
 }
 
 inline String LocalDOMWindow::defaultStatus() const
 {
     return m_defaultStatus;
 }
 
 } // namespace blink
 
 #endif // LocalDOMWindow_h