Mouse lock implementation, including the renderer side and the Windows version of the browser side.

content/renderer/render_view.h

Index: content/renderer/render_view.h
diff --git a/content/renderer/render_view.h b/content/renderer/render_view.h
index cadbc815714686b42bfccf13767c8f849e41a4b5..2ef5eb38fbd08914914ab7656bb2e21582a169d0 100644
--- a/content/renderer/render_view.h
+++ b/content/renderer/render_view.h
@@ -125,6 +125,7 @@ class WebGeolocationServiceInterface;
 class WebIconURL;
 class WebImage;
 class WebInputElement;
+class WebInputEvent;
 class WebKeyboardEvent;
 class WebMediaPlayer;
 class WebMediaPlayerClient;
@@ -623,6 +624,8 @@ class RenderView : public RenderWidget,
   virtual gfx::Point GetScrollOffset();
   virtual void DidHandleKeyEvent();
   virtual void DidHandleMouseEvent(const WebKit::WebMouseEvent& event);
+  virtual bool OnBeforeHandleInputEvent(
+      const WebKit::WebInputEvent& event) OVERRIDE;
   virtual void OnSetFocus(bool enable);
   virtual void OnWasHidden();
   virtual void OnWasRestored(bool needs_repainting);
@@ -803,8 +806,10 @@ class RenderView : public RenderWidget,
       const std::vector<GURL>& links,
       const std::vector<FilePath>& local_paths,
       const FilePath& local_directory_name);
+  void OnLockMouseACK(bool succeeded);
   void OnMediaPlayerActionAt(const gfx::Point& location,
                              const WebKit::WebMediaPlayerAction& action);
+  void OnMouseLockLost();
   void OnMoveOrResizeStarted();
   void OnNavigate(const ViewMsg_Navigate_Params& params);
   void OnPaste();