content: Remove Lock/Unlock CompositingSurface API from RWH.

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 391 matching lines @@
 
   // Called by the RenderWidgetHost when an ambiguous gesture is detected to
   // show the disambiguation popup bubble.
   virtual void ShowDisambiguationPopup(const gfx::Rect& rect_pixels,
                                        const SkBitmap& zoomed_bitmap);
 
   // Called by the WebContentsImpl when a user tries to navigate a new page on
   // main frame.
   virtual void OnDidNavigateMainFrameToNewPage();
 
-  // Instructs the view to not drop the surface even when the view is hidden.
-  virtual void LockCompositingSurface() = 0;
-  virtual void UnlockCompositingSurface() = 0;
-
   // 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);
 
   // Returns a reference to the current instance of TextInputManager. The
   // reference is obtained from RenderWidgetHostDelegate. The first time a non-
   // null reference is obtained, its value is cached in |text_input_manager_|
   // and this view is registered with it. The RWHV will unregister from the
@@ skipping 61 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_