Delete background tab IOSurfaces on Mac.

content/browser/renderer_host/test_render_view_host.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_TEST_RENDER_VIEW_HOST_H_
 #define CONTENT_BROWSER_RENDERER_HOST_TEST_RENDER_VIEW_HOST_H_
 #pragma once
 
 #include "base/basictypes.h"
 #include "base/gtest_prod_util.h"
@@ skipping 94 matching lines @@
       skia::PlatformCanvas* output,
       base::Callback<void(bool)> callback) OVERRIDE;
   virtual void OnAcceleratedCompositingStateChange() OVERRIDE;
   virtual void AcceleratedSurfaceBuffersSwapped(
       const GpuHostMsg_AcceleratedSurfaceBuffersSwapped_Params& params,
       int gpu_host_id) OVERRIDE;
   virtual void AcceleratedSurfacePostSubBuffer(
       const GpuHostMsg_AcceleratedSurfacePostSubBuffer_Params& params,
       int gpu_host_id) OVERRIDE;
   virtual void AcceleratedSurfaceSuspend() OVERRIDE;
+  virtual bool HasAcceleratedSurface(const gfx::Size& desired_size) OVERRIDE;
 #if defined(OS_MACOSX)
   virtual gfx::Rect GetViewCocoaBounds() const OVERRIDE;
   virtual void PluginFocusChanged(bool focused, int plugin_id) OVERRIDE;
   virtual void StartPluginIme() OVERRIDE;
   virtual bool PostProcessEventForPluginIme(
       const NativeWebKeyboardEvent& event) OVERRIDE;
   virtual gfx::PluginWindowHandle AllocateFakePluginWindowHandle(
       bool opaque,
       bool root) OVERRIDE;
   virtual void DestroyFakePluginWindowHandle(
@@ skipping 187 matching lines @@
   TestRenderViewHost* active_test_rvh();
   TestWebContents* contents();
 
  private:
   DISALLOW_COPY_AND_ASSIGN(RenderViewHostImplTestHarness);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_RENDERER_HOST_TEST_RENDER_VIEW_HOST_H_