Revert of Make lost context and error message callbacks on GpuControl go to client

components/mus/gles2/command_buffer_local.h

Index: components/mus/gles2/command_buffer_local.h
diff --git a/components/mus/gles2/command_buffer_local.h b/components/mus/gles2/command_buffer_local.h
index 48f286258c8b4bfc9328f6a3b08cc1443cabec0c..6c5cef51b023191d6b240a73d2b9a0292f4634d2 100644
--- a/components/mus/gles2/command_buffer_local.h
+++ b/components/mus/gles2/command_buffer_local.h
@@ -35,7 +35,6 @@
 }
 
 namespace gpu {
-class GpuControlClient;
 class SyncPointClient;
 }
 
@@ -75,7 +74,6 @@
   void DestroyTransferBuffer(int32_t id) override;
 
   // gpu::GpuControl implementation:
-  void SetGpuControlClient(gpu::GpuControlClient*) override;
   gpu::Capabilities GetCapabilities() override;
   int32_t CreateImage(ClientBuffer buffer,
                       size_t width,
@@ -146,7 +144,6 @@
   scoped_refptr<base::SingleThreadTaskRunner> client_thread_task_runner_;
 
   // Members accessed on the client thread:
-  gpu::GpuControlClient* gpu_control_client_;
   gpu::CommandBuffer::State last_state_;
   mojo::ScopedSharedBufferHandle shared_state_handle_;
   gpu::CommandBufferSharedState* shared_state_;
@@ -156,7 +153,6 @@
   int32_t next_image_id_;
   uint64_t next_fence_sync_release_;
   uint64_t flushed_fence_sync_release_;
-  bool lost_context_;
 
   // This sync point client is only for out of order Wait on client thread.
   scoped_ptr<gpu::SyncPointClient> sync_point_client_waiter_;