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

content/common/gpu/client/webgraphicscontext3d_command_buffer_impl.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_COMMON_GPU_CLIENT_WEBGRAPHICSCONTEXT3D_COMMAND_BUFFER_IMPL_H_
 #define CONTENT_COMMON_GPU_CLIENT_WEBGRAPHICSCONTEXT3D_COMMAND_BUFFER_IMPL_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 173 matching lines @@
   // NOTE: on Mac OS X, this entry point is only used to set up the
   // accelerated compositor's output. On this platform, we actually pass
   // a gpu::SurfaceHandle in place of the gfx::NativeViewId,
   // because the facility to allocate a fake PluginWindowHandle is
   // already in place. We could add more entry points and messages to
   // allocate both fake PluginWindowHandles and NativeViewIds and map
   // from fake NativeViewIds to PluginWindowHandles, but this seems like
   // unnecessary complexity at the moment.
   bool CreateContext();
 
-  void OnContextLost();
-  void OnErrorMessage(const char* message, int32_t id);
+  virtual void OnContextLost();
 
   bool automatic_flushes_;
   gpu::gles2::ContextCreationAttribHelper attributes_;
 
   // State needed by MaybeInitializeGL.
   scoped_refptr<gpu::GpuChannelHost> host_;
   gpu::SurfaceHandle surface_handle_;
   GURL active_url_;
   CommandBufferContextType context_type_;
 
   gfx::GpuPreference gpu_preference_;
 
   scoped_ptr<gpu::CommandBufferProxyImpl> command_buffer_;
   scoped_ptr<gpu::gles2::GLES2CmdHelper> gles2_helper_;
   scoped_ptr<gpu::TransferBuffer> transfer_buffer_;
   scoped_ptr<gpu::gles2::GLES2Implementation> real_gl_;
   scoped_ptr<gpu::gles2::GLES2Interface> trace_gl_;
   SharedMemoryLimits mem_limits_;
   scoped_refptr<ShareGroup> share_group_;
 
   // Member variables should appear before the WeakPtrFactory, to ensure
   // that any WeakPtrs to Controller are invalidated before its members
   // variable's destructors are executed, rendering them invalid.
   base::WeakPtrFactory<WebGraphicsContext3DCommandBufferImpl> weak_ptr_factory_;
 };
 
 }  // namespace content
 
 #endif  // CONTENT_COMMON_GPU_CLIENT_WEBGRAPHICSCONTEXT3D_COMMAND_BUFFER_IMPL_H_