Introduce WebFrameWidget to Blink

Source/web/WebLocalFrameImpl.h

 /*
  * Copyright (C) 2009 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 37 matching lines @@
 class GeolocationClientProxy;
 class IntSize;
 class KURL;
 class Range;
 class ScriptSourceCode;
 class SharedWorkerRepositoryClientImpl;
 class TextFinder;
 class WebAutofillClient;
 class WebDataSourceImpl;
 class WebFrameClient;
+class WebFrameWidgetImpl;
 class WebPerformance;
 class WebPlugin;
 class WebPluginContainerImpl;
 class WebScriptExecutionCallback;
 class WebView;
 class WebViewImpl;
 struct FrameLoadRequest;
 struct WebPrintParams;
 
 template <typename T> class WebVector;
@@ skipping 242 matching lines @@
 
     // Invalidates vertical scrollbar only.
     void invalidateScrollbar() const;
 
     // Invalidates both content area and the scrollbar.
     void invalidateAll() const;
 
     // Returns a hit-tested VisiblePosition for the given point
     VisiblePosition visiblePositionForWindowPoint(const WebPoint&);
 
+    void setFrameWidget(WebFrameWidgetImpl*);
+    WebFrameWidgetImpl* frameWidget() const;
+
 #if ENABLE(OILPAN)
     void trace(Visitor*);
 #endif
 
 private:
     friend class FrameLoaderClientImpl;
 
     explicit WebLocalFrameImpl(WebFrameClient*);
 
     // Sets the local core frame and registers destruction observers.
     void setCoreFrame(PassRefPtrWillBeRawPtr<LocalFrame>);
 
     void loadJavaScriptURL(const KURL&);
 
     WebPlugin* focusedPluginIfInputMethodSupported();
 
     FrameLoaderClientImpl m_frameLoaderClientImpl;
 
     // The embedder retains a reference to the WebCore LocalFrame while it is active in the DOM. This
     // reference is released when the frame is removed from the DOM or the entire page is closed.
     // FIXME: These will need to change to WebFrame when we introduce WebFrameProxy.
     RefPtrWillBeMember<LocalFrame> m_frame;
 
+    // This is set if the frame is the root of a local frame tree, and requires a widget for rendering.
+    WebFrameWidgetImpl* m_frameWidget;
+
     WebFrameClient* m_client;
     WebAutofillClient* m_autofillClient;
     WebPermissionClient* m_permissionClient;
     OwnPtr<SharedWorkerRepositoryClientImpl> m_sharedWorkerRepositoryClient;
 
     // Will be initialized after first call to find() or scopeStringMatches().
     OwnPtrWillBeMember<TextFinder> m_textFinder;
 
     // Valid between calls to BeginPrint() and EndPrint(). Containts the print
     // information. Is used by PrintPage().
@@ skipping 17 matching lines @@
     GC_PLUGIN_IGNORE("340522")
     Persistent<WebLocalFrameImpl> m_selfKeepAlive;
 #endif
 };
 
 DEFINE_TYPE_CASTS(WebLocalFrameImpl, WebFrame, frame, frame->isWebLocalFrame(), frame.isWebLocalFrame());
 
 } // namespace blink
 
 #endif