Remove duplicated code in AcceleratedSurface using PbufferGLContext instead....

app/gfx/gl/gl_context_mac.cc

 // Copyright (c) 2010 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.
 
 // This file implements the ViewGLContext and PbufferGLContext classes.
 
 #include <OpenGL/OpenGL.h>
 
-#include "app/surface/accelerated_surface_mac.h"
 #include "base/logging.h"
 #include "base/scoped_ptr.h"
 #include "app/gfx/gl/gl_bindings.h"
 #include "app/gfx/gl/gl_context.h"
 #include "app/gfx/gl/gl_context_stub.h"
 #include "app/gfx/gl/gl_implementation.h"
 
 namespace gfx {
 
 typedef CGLContextObj GLContextHandle;
@@ skipping 156 matching lines @@
     }
     case kGLImplementationMockGL:
       return new StubGLContext;
     default:
       NOTREACHED();
       return NULL;
   }
 }
 
 }  // namespace gfx