Implement cursor compositing mode on Ash

ash/shell.h

 // 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.
 
 #ifndef ASH_SHELL_H_
 #define ASH_SHELL_H_
 
 #include <utility>
 #include <vector>
 
@@ skipping 481 matching lines @@
   // TODO(oshima): Move these objects to DisplayController.
   chromeos::OutputConfigurator* output_configurator() {
     return output_configurator_.get();
   }
   internal::OutputConfiguratorAnimation* output_configurator_animation() {
     return output_configurator_animation_.get();
   }
   internal::DisplayErrorObserver* display_error_observer() {
     return display_error_observer_.get();
   }
+
+  // Toggles cursor compositing on/off. Native cursor is disabled when cursor
+  // compositing is enabled, and vice versa.
+  void SetCursorCompositingEnabled(bool enabled);
+  bool is_cursor_compositing_enabled() const {
+    return is_cursor_compositing_enabled_;
+  }
 #endif  // defined(USE_X11)
 
   internal::ResolutionNotificationController*
       resolution_notification_controller() {
     return resolution_notification_controller_.get();
   }
 #endif  // defined(OS_CHROMEOS)
 
   WindowTreeHostFactory* root_window_host_factory() {
     return root_window_host_factory_.get();
@@ skipping 179 matching lines @@
       resolution_notification_controller_;
 #if defined(USE_X11)
   // Controls video output device state.
   scoped_ptr<chromeos::OutputConfigurator> output_configurator_;
   scoped_ptr<internal::OutputConfiguratorAnimation>
       output_configurator_animation_;
   scoped_ptr<internal::DisplayErrorObserver> display_error_observer_;
 
   // Listens for output changes and updates the display manager.
   scoped_ptr<internal::DisplayChangeObserver> display_change_observer_;
+
+  bool is_cursor_compositing_enabled_;

[oshima, 2014/02/05 21:49:59]

can we simply use one in CursorWindowController?

[hshi1, 2014/02/05 22:55:58]

Done.

 #endif  // defined(USE_X11)
 #endif  // defined(OS_CHROMEOS)
 
   // |native_cursor_manager_| is owned by |cursor_manager_|, but we keep a
   // pointer to vend to test code.
   AshNativeCursorManager* native_cursor_manager_;
   views::corewm::CursorManager cursor_manager_;
 
   ObserverList<ShellObserver> observers_;
 
   // For testing only: simulate that a modal window is open
   bool simulate_modal_window_open_for_testing_;
 
   bool is_touch_hud_projection_enabled_;
 
   // Injected content::GPUDataManager support.
   scoped_ptr<GPUSupport> gpu_support_;
 
   DISALLOW_COPY_AND_ASSIGN(Shell);
 };
 
 }  // namespace ash
 
 #endif  // ASH_SHELL_H_