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

gpu/command_buffer/service/gpu_processor_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.
 
 #include "app/gfx/gl/gl_context.h"
 #include "gpu/command_buffer/service/gpu_processor.h"
 
 using ::base::SharedMemory;
 
 namespace gpu {
@@ skipping 22 matching lines @@
     return false;
 
   // On Mac OS X since we can not render on-screen we don't even
   // attempt to create a view based GLContext. The only difference
   // between "on-screen" and "off-screen" rendering on this platform
   // is whether we allocate an AcceleratedSurface, which transmits the
   // rendering results back to the browser.
   if (window) {
     surface_.reset(new AcceleratedSurface());
     // TODO(apatrick): AcceleratedSurface will not work with an OSMesa context.
-    if (!surface_->Initialize(
-        static_cast<CGLContextObj>(context_->GetHandle()), false)) {
+    if (!surface_->Initialize(context_.get(), false)) {
       Destroy();
       return false;
     }
   }
 
   return InitializeCommon(size, parent_decoder, parent_texture_id);
 
   return true;
 }
 
@@ skipping 30 matching lines @@
     surface_->SwapBuffers();
   }
 
   if (wrapped_swap_buffers_callback_.get()) {
     wrapped_swap_buffers_callback_->Run();
   }
 }
 
 }  // namespace gpu