Implement accessibility support for CSS-transformed iframes.

content/browser/renderer_host/render_widget_host_view_base.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_VIEW_BASE_H_
 #define CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_VIEW_BASE_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 385 matching lines @@
   static void DetachPluginWindowsCallback(HWND window);
 #endif
 
   // Add and remove observers for lifetime event notifications. The order in
   // which notifications are sent to observers is undefined. Clients must be
   // sure to remove the observer before they go away.
   void AddObserver(RenderWidgetHostViewBaseObserver* observer);
   void RemoveObserver(RenderWidgetHostViewBaseObserver* observer);
 
   // Exposed for testing.
+  virtual bool IsChildFrameForTesting() const;
   virtual cc::SurfaceId SurfaceIdForTesting() const;
 
  protected:
   // Interface class only, do not construct.
   RenderWidgetHostViewBase();
 
   void NotifyObserversAboutShutdown();
 
 #if defined(OS_WIN)
   // Shared implementation of MovePluginWindows for use by win and aura/wina.
@@ skipping 60 matching lines @@
   base::ObserverList<RenderWidgetHostViewBaseObserver> observers_;
 
   base::WeakPtrFactory<RenderWidgetHostViewBase> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderWidgetHostViewBase);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_VIEW_BASE_H_