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 542 matching lines @@
 ash::FirstRunHelper* Shell::CreateFirstRunHelper() {
   return new ash::FirstRunHelperImpl;
 }
 #endif  // defined(OS_CHROMEOS)
 
 void Shell::DoInitialWorkspaceAnimation() {
   return GetPrimaryRootWindowController()->workspace_controller()->
       DoInitialAnimation();
 }
 
+#if defined(OS_CHROMEOS) && defined(USE_X11)
+void Shell::SetCursorCompositingEnabled(bool enabled) {
+  if (is_cursor_compositing_enabled_ != enabled) {
+    display_controller_->SetCursorCompositingEnabled(enabled);
+    cursor_manager_.SetNativeCursorEnabled(!enabled);
+    is_cursor_compositing_enabled_ = enabled;
+  }
+}
+#endif
+
 ////////////////////////////////////////////////////////////////////////////////
 // Shell, private:
 
 Shell::Shell(ShellDelegate* delegate)
     : target_root_window_(NULL),
       scoped_target_root_window_(NULL),
       delegate_(delegate),
       window_positioner_(new WindowPositioner),
       activation_client_(NULL),
 #if defined(OS_CHROMEOS) && defined(USE_X11)
@@ skipping 481 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