Refactor how surfaces are acquired for GPU compositing.

chrome/browser/renderer_host/render_widget_host_view_views.h

 // Copyright (c) 2010 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 CHROME_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_VIEW_VIEWS_H_
 #define CHROME_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_VIEW_VIEWS_H_
 #pragma once
 
 #include <map>
 #include <string>
@@ skipping 61 matching lines @@
   virtual void SetTooltipText(const std::wstring& tooltip_text);
   virtual void SelectionChanged(const std::string& text);
   virtual void ShowingContextMenu(bool showing);
   virtual BackingStore* AllocBackingStore(const gfx::Size& size);
   virtual void SetBackground(const SkBitmap& background);
   virtual void CreatePluginContainer(gfx::PluginWindowHandle id);
   virtual void DestroyPluginContainer(gfx::PluginWindowHandle id);
   virtual void SetVisuallyDeemphasized(const SkColor* color, bool animate);
   virtual bool ContainsNativeView(gfx::NativeView native_view) const;
   virtual void AcceleratedCompositingActivated(bool activated);
+  virtual gfx::PluginWindowHandle AcquireCompositingSurface();
+  virtual void ReleaseCompositingSurface(gfx::PluginWindowHandle surface);
 
   // On some systems, there can be two native views, where an outer native view
   // contains the inner native view (e.g. when using GTK+). This returns the
   // inner view. This can return NULL when it's not attached to a view.
   gfx::NativeView GetInnerNativeView() const;
 
   virtual void OnPaint(gfx::Canvas* canvas);
 
   // Overridden from views::View.
   virtual std::string GetClassName() const;
@@ skipping 89 matching lines @@
   WebKit::WebTouchEvent touch_event_;
 
   // Input method context used to translating sequence of key events into other
   // languages.
   scoped_ptr<IMEContextHandler> ime_context_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderWidgetHostViewViews);
 };
 
 #endif  // CHROME_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_VIEW_VIEWS_H_