Implement cursor compositing mode on Ash

ash/shell.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.h"
 
 #include <algorithm>
 #include <string>
 
 #include "ash/accelerators/accelerator_controller.h"
@@ skipping 935 matching lines @@
   // Set accelerator controller delegates.
   accelerator_controller_->SetBrightnessControlDelegate(
       scoped_ptr<ash::BrightnessControlDelegate>(
           new ash::system::BrightnessControllerChromeos).Pass());
 
   power_event_observer_.reset(new internal::PowerEventObserver());
   user_activity_notifier_.reset(
       new internal::UserActivityNotifier(user_activity_detector_.get()));
   video_activity_notifier_.reset(
       new internal::VideoActivityNotifier(video_detector_.get()));
+
+#if defined(USE_X11)
+  cursor_manager_.SetNativeCursorEnabled(false);
+  display_controller_->EnableCompositedCursor(
+      internal::GetRootWindowController(root_window)->GetContainer(
+          internal::kShellWindowId_OverlayContainer));
+#endif
+
 #endif
 
   weak_display_manager_factory_.reset(
       new base::WeakPtrFactory<internal::DisplayManager>(
           display_manager_.get()));
   // The compositor thread and main message loop have to be running in
   // order to create mirror window. Run it after the main message loop
   // is started.
   base::MessageLoopForUI::current()->PostTask(
       FROM_HERE,
@@ skipping 88 matching lines @@
 ////////////////////////////////////////////////////////////////////////////////
 // Shell, aura::client::ActivationChangeObserver implementation:
 
 void Shell::OnWindowActivated(aura::Window* gained_active,
                               aura::Window* lost_active) {
   if (gained_active)
     target_root_window_ = gained_active->GetRootWindow();
 }
 
 }  // namespace ash