Provide real GPUSupport to ash for Chrome

ash/shell/shell_delegate_impl.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 "ash/shell/shell_delegate_impl.h"
 
 #include "ash/accessibility_delegate.h"
 #include "ash/caps_lock_delegate_stub.h"
 #include "ash/default_accessibility_delegate.h"
 #include "ash/default_user_wallpaper_delegate.h"
+#include "ash/gpu_support_stub.h"
 #include "ash/host/root_window_host_factory.h"
 #include "ash/media_delegate.h"
 #include "ash/new_window_delegate.h"
 #include "ash/session_state_delegate.h"
 #include "ash/session_state_delegate_stub.h"
 #include "ash/shell/context_menu.h"
 #include "ash/shell/example_factory.h"
 #include "ash/shell/keyboard_controller_proxy_stub.h"
 #include "ash/shell/shelf_delegate_impl.h"
 #include "ash/shell/toplevel_window.h"
@@ skipping 141 matching lines @@
     aura::Window* root,
     ash::ShelfItemDelegate* item_delegate,
     ash::LauncherItem* item) {
   return new ContextMenu(root);
 }
 
 WindowTreeHostFactory* ShellDelegateImpl::CreateWindowTreeHostFactory() {
   return WindowTreeHostFactory::Create();
 }
 
+GPUSupport* ShellDelegateImpl::CreateGPUSupport() {
+  // Real GPU support depends on src/content, so just use a stub.
+  return new GPUSupportStub;
+}
+
 base::string16 ShellDelegateImpl::GetProductName() const {
   return base::string16();
 }
 
 }  // namespace shell
 }  // namespace ash