Keep the mouse cursor within desktop

ui/aura/dispatcher_linux.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 UI_AURA_DISPATCHER_LINUX_H_
 #define UI_AURA_DISPATCHER_LINUX_H_
 #pragma once
 
 #include <map>
 #include <X11/Xlib.h>
 // Get rid of a macro from Xlib.h that conflicts with Aura's RootWindow class.
 #undef RootWindow
 
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
 #include "base/message_loop.h"
-#include "ui/aura/env.h"
 
 namespace aura {
 
-class RootWindowHostLinux;
-
-class DispatcherLinux : public Dispatcher {
+class DispatcherLinux : public MessageLoop::Dispatcher {
  public:
   DispatcherLinux();
   virtual ~DispatcherLinux();
 
-  void RootWindowHostCreated(::Window window,
-                             ::Window root,
-                             RootWindowHostLinux* host);
-  void RootWindowHostDestroying(::Window window, ::Window root);
+  void WindowDispatcherCreated(::Window window,
+                               MessageLoop::Dispatcher* dispatcher);
+  void WindowDispatcherDestroying(::Window window);
 
   // Overridden from MessageLoop::Dispatcher:
   virtual base::MessagePumpDispatcher::DispatchStatus Dispatch(
       XEvent* xev) OVERRIDE;
 
  private:
-  typedef std::map< ::Window, RootWindowHostLinux* > HostsMap;
+  typedef std::map< ::Window, MessageLoop::Dispatcher* > DispatchersMap;
 
-  RootWindowHostLinux* GetRootWindowHostForXEvent(XEvent* xev) const;
+  MessageLoop::Dispatcher* GetDispatcherForXEvent(XEvent* xev) const;
 
-  HostsMap hosts_;
+  DispatchersMap dispatchers_;
 
   DISALLOW_COPY_AND_ASSIGN(DispatcherLinux);
 };
 
 }  // namespace aura
 
 #endif  // UI_AURA_DISPATCHER_LINUX_H_