Teach GPU command buffer whether a context is webgl.

gpu/blink/webgraphicscontext3d_in_process_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 GPU_BLINK_WEBGRAPHICSCONTEXT3D_IN_PROCESS_COMMAND_BUFFER_IMPL_H_
 #define GPU_BLINK_WEBGRAPHICSCONTEXT3D_IN_PROCESS_COMMAND_BUFFER_IMPL_H_
 
 #include <vector>
 
 #include "base/compiler_specific.h"
@@ skipping 71 matching lines @@
   void OnContextLost();
 
   bool MaybeInitializeGL();
 
   // Used to try to find bugs in code that calls gl directly through the gl api
   // instead of going through WebGraphicsContext3D.
   void ClearContext();
 
   ::gpu::gles2::ContextCreationAttribHelper attribs_;
   bool share_resources_;
-  bool webgl_context_;
 
   bool is_offscreen_;
   // Only used when not offscreen.
   gfx::AcceleratedWidget window_;
 
   // The context we use for OpenGL rendering.
   scoped_ptr< ::gpu::GLInProcessContext> context_;
   // The GLES2Implementation we use for OpenGL rendering.
   ::gpu::gles2::GLES2Implementation* real_gl_;
 };
 
 }  // namespace gpu_blink
 
 #endif  // GPU_BLINK_WEBGRAPHICSCONTEXT3D_IN_PROCESS_COMMAND_BUFFER_IMPL_H_