Only allow to lock the mouse when the tab is in fullscreen mode.

content/browser/renderer_host/render_view_host.h

 // Copyright (c) 2011 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 CONTENT_BROWSER_RENDERER_HOST_RENDER_VIEW_HOST_H_
 #define CONTENT_BROWSER_RENDERER_HOST_RENDER_VIEW_HOST_H_
 #pragma once
 
 #include <string>
 #include <vector>
@@ skipping 411 matching lines @@
   void AddObserver(RenderViewHostObserver* observer);
   void RemoveObserver(RenderViewHostObserver* observer);
 
   // RenderWidgetHost protected overrides.
   virtual bool PreHandleKeyboardEvent(const NativeWebKeyboardEvent& event,
                                       bool* is_keyboard_shortcut);
   virtual void UnhandledKeyboardEvent(const NativeWebKeyboardEvent& event);
   virtual void OnUserGesture();
   virtual void NotifyRendererUnresponsive();
   virtual void NotifyRendererResponsive();
+  virtual bool HasMouseLockPermission() const;

[sky, 2011/09/28 22:58:04]

OVERRIDE

[yzshen1, 2011/09/29 20:41:04]

Done.

   virtual void OnMsgFocus();
   virtual void OnMsgBlur();
 
   // IPC message handlers.
   void OnMsgShowView(int route_id,
                      WindowOpenDisposition disposition,
                      const gfx::Rect& initial_pos,
                      bool user_gesture);
   void OnMsgShowWidget(int route_id, const gfx::Rect& initial_pos);
   void OnMsgShowFullscreenWidget(int route_id);
@@ skipping 149 matching lines @@
   // The termination status of the last render view that terminated.
   base::TerminationStatus render_view_termination_status_;
 
   // A list of observers that filter messages.  Weak references.
   ObserverList<RenderViewHostObserver> observers_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderViewHost);
 };
 
 #endif  // CONTENT_BROWSER_RENDERER_HOST_RENDER_VIEW_HOST_H_