Remove the problematic call to GLSurface::GetBackingFrameBufferObject.

gpu/command_buffer/service/gl_context_virtual.cc

 // 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.
 
 #include "gpu/command_buffer/service/gl_context_virtual.h"
 
 #include "gpu/command_buffer/service/gl_state_restorer_impl.h"
 #include "gpu/command_buffer/service/gles2_cmd_decoder.h"
 #include "ui/gl/gl_surface.h"
 
@@ skipping 52 matching lines @@
 
 void GLContextVirtual::ReleaseCurrent(gfx::GLSurface* surface) {
   if (IsCurrent(surface)) {
     shared_context_->OnReleaseVirtuallyCurrent(this);
     shared_context_->ReleaseCurrent(surface);
   }
 }
 
 bool GLContextVirtual::IsCurrent(gfx::GLSurface* surface) {
   // If it's a real surface it needs to be current.
   if (surface &&

[no sievers, 2013/09/09 17:04:12]

nit: I think this fits in one line now

-      !surface->IsOffscreen() &&
-      !surface->GetBackingFrameBufferObject())
+      !surface->IsOffscreen())
     return shared_context_->IsCurrent(surface);
 
   // Otherwise, only insure the context itself is current.
   return shared_context_->IsCurrent(NULL);
 }
 
 void* GLContextVirtual::GetHandle() {
   return shared_context_->GetHandle();
 }
 
@@ skipping 22 matching lines @@
 
 void GLContextVirtual::SetUnbindFboOnMakeCurrent() {
   shared_context_->SetUnbindFboOnMakeCurrent();
 }
 
 GLContextVirtual::~GLContextVirtual() {
   Destroy();
 }
 
 }  // namespace gpu