cc: Remove the capability to give up and leave compositing mode.

cc/trees/single_thread_proxy.h

 // Copyright 2011 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 CC_TREES_SINGLE_THREAD_PROXY_H_
 #define CC_TREES_SINGLE_THREAD_PROXY_H_
 
 #include <limits>
 
 #include "base/time/time.h"
@@ skipping 70 matching lines @@
   virtual void DidManageTiles() OVERRIDE {}
   virtual void SetDebugState(const LayerTreeDebugState& debug_state) OVERRIDE {}
 
   // Called by the legacy path where RenderWidget does the scheduling.
   void CompositeImmediately(base::TimeTicks frame_begin_time);
 
  private:
   SingleThreadProxy(LayerTreeHost* layer_tree_host,
                     LayerTreeHostSingleThreadClient* client);
 
-  void OnOutputSurfaceInitializeAttempted(bool success);
   bool CommitAndComposite(base::TimeTicks frame_begin_time,
                           const gfx::Rect& device_viewport_damage_rect,
                           bool for_readback,
                           LayerTreeHostImpl::FrameData* frame);
   void DoCommit(scoped_ptr<ResourceUpdateQueue> queue);
   bool DoComposite(base::TimeTicks frame_begin_time,
                    const gfx::Rect& device_viewport_damage_rect,
                    bool for_readback,
                    LayerTreeHostImpl::FrameData* frame);
   void DidSwapFrame();
@@ skipping 74 matching lines @@
  private:
   DebugScopedSetImplThread impl_thread_;
   DebugScopedSetMainThreadBlocked main_thread_blocked_;
 
   DISALLOW_COPY_AND_ASSIGN(DebugScopedSetImplThreadAndMainThreadBlocked);
 };
 
 }  // namespace cc
 
 #endif  // CC_TREES_SINGLE_THREAD_PROXY_H_