Keep the mouse cursor within desktop

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_
 #pragma once
 
 #include <utility>
 #include <vector>
@@ skipping 45 matching lines @@
 class WindowCycleController;
 
 namespace internal {
 class ActivationController;
 class AcceleratorFilter;
 class AppList;
 class DragDropController;
 class FocusCycler;
 class InputMethodEventFilter;
 class MonitorController;
+class MonitorChangeObserverX11;
 class PartialScreenshotEventFilter;
 class ResizeShadowController;
 class RootWindowEventFilter;
 class RootWindowLayoutManager;
 class ShadowController;
 class ShelfLayoutManager;
 class StackingController;
 class TooltipController;
 class VisibilityController;
 class WindowModalityController;
@@ skipping 165 matching lines @@
 
   // Disables the workspace grid layout.
   void DisableWorkspaceGridLayout();
 
   static Shell* instance_;
 
   // If set before the Shell is initialized, the mouse cursor will be hidden
   // when the screen is initially created.
   static bool initially_hide_cursor_;
 
+#if defined(USE_X11)
+  scoped_ptr<internal::MonitorChangeObserverX11> monitor_change_observer_;
+#endif
+
   scoped_ptr<aura::RootWindow> root_window_;
   ScreenAsh* screen_;
 
   internal::RootWindowEventFilter* root_filter_;  // not owned
 
   std::vector<WindowAndBoundsPair> to_restore_;
 
 #if !defined(OS_MACOSX)
   scoped_ptr<NestedDispatcherController> nested_dispatcher_controller_;
 
@@ skipping 52 matching lines @@
   // System tray with clock, Wi-Fi signal, etc. (a replacement in progress for
   // |status_widget_|).
   scoped_ptr<SystemTray> tray_;
 
   DISALLOW_COPY_AND_ASSIGN(Shell);
 };
 
 }  // namespace ash
 
 #endif  // ASH_SHELL_H_