Remove GPU relinquish resources infrastructure and stop GPU process.

content/common/gpu/gpu_channel_manager.h

Index: content/common/gpu/gpu_channel_manager.h
diff --git a/content/common/gpu/gpu_channel_manager.h b/content/common/gpu/gpu_channel_manager.h
index 2bbca8b9d88425921727d68cacc60e1f1856770e..ef1d80b019b377c03075a9d5225766c7f92d8afe 100644
--- a/content/common/gpu/gpu_channel_manager.h
+++ b/content/common/gpu/gpu_channel_manager.h
@@ -130,15 +130,13 @@ class CONTENT_EXPORT GpuChannelManager : public IPC::Listener,
                                 int client_id,
                                 int32 sync_point);
 
-  void OnRelinquishResources();
-  void OnResourcesRelinquished();
+  void OnFinalize();
 
   void OnUpdateValueState(int client_id,
                           unsigned int target,
                           const gpu::ValueState& state);
 
   void OnLoseAllContexts();
-  void CheckRelinquishGpuResources();
 
   scoped_refptr<base::SingleThreadTaskRunner> io_task_runner_;
   base::WaitableEvent* shutdown_event_;
@@ -161,7 +159,6 @@ class CONTENT_EXPORT GpuChannelManager : public IPC::Listener,
   scoped_refptr<gfx::GLSurface> default_offscreen_surface_;
   GpuMemoryBufferFactory* const gpu_memory_buffer_factory_;
   IPC::SyncChannel* channel_;
-  bool relinquish_resources_pending_;
   // Must outlive this instance of GpuChannelManager.
   IPC::AttachmentBroker* attachment_broker_;