Delete background tab IOSurfaces on Mac.

content/browser/renderer_host/test_render_view_host.cc

 // 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.
 
 #include "content/browser/renderer_host/test_backing_store.h"
 #include "content/browser/renderer_host/test_render_view_host.h"
 #include "content/browser/site_instance_impl.h"
 #include "content/browser/web_contents/navigation_controller_impl.h"
 #include "content/browser/web_contents/test_web_contents.h"
 #include "content/common/view_messages.h"
@@ skipping 105 matching lines @@
 }
 
 void TestRenderWidgetHostView::AcceleratedSurfacePostSubBuffer(
     const GpuHostMsg_AcceleratedSurfacePostSubBuffer_Params& params,
     int gpu_host_id) {
 }
 
 void TestRenderWidgetHostView::AcceleratedSurfaceSuspend() {
 }
 
+bool TestRenderWidgetHostView::HasAcceleratedSurface(
+      const gfx::Size& desired_size) {
+  return false;
+}
+
 #if defined(OS_MACOSX)
 
 gfx::Rect TestRenderWidgetHostView::GetViewCocoaBounds() const {
   return gfx::Rect();
 }
 
 void TestRenderWidgetHostView::SetActive(bool active) {
   // <viettrungluu@gmail.com>: Do I need to do anything here?
 }
 
@@ skipping 182 matching lines @@
 
 TestRenderViewHost* RenderViewHostImplTestHarness::active_test_rvh() {
   return static_cast<TestRenderViewHost*>(active_rvh());
 }
 
 TestWebContents* RenderViewHostImplTestHarness::contents() {
   return static_cast<TestWebContents*>(web_contents());
 }
 
 }  // namespace content