User Gesture plumbed from Renderer to Browser's FullscreenController::RequestToLockMouse.

content/browser/web_contents/web_contents_impl.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 CONTENT_BROWSER_WEB_CONTENTS_WEB_CONTENTS_IMPL_H_
 #define CONTENT_BROWSER_WEB_CONTENTS_WEB_CONTENTS_IMPL_H_
 #pragma once
 
 #include <map>
 #include <string>
@@ skipping 318 matching lines @@
   virtual void HandleMouseDown() OVERRIDE;
   virtual void HandleMouseUp() OVERRIDE;
   virtual void HandleMouseActivate() OVERRIDE;
   virtual void RunFileChooser(
       content::RenderViewHost* render_view_host,
       const content::FileChooserParams& params) OVERRIDE;
   virtual void ToggleFullscreenMode(bool enter_fullscreen) OVERRIDE;
   virtual bool IsFullscreenForCurrentTab() const OVERRIDE;
   virtual void UpdatePreferredSize(const gfx::Size& pref_size) OVERRIDE;
   virtual void ResizeDueToAutoResize(const gfx::Size& new_size) OVERRIDE;
-  virtual void RequestToLockMouse() OVERRIDE;
+  virtual void RequestToLockMouse(bool user_gesture) OVERRIDE;
   virtual void LostMouseLock() OVERRIDE;
 
   // RenderViewHostManager::Delegate -------------------------------------------
 
   virtual bool CreateRenderViewForRenderManager(
       content::RenderViewHost* render_view_host) OVERRIDE;
   virtual void BeforeUnloadFiredFromRenderManager(
       bool proceed,
       bool* proceed_to_fire_unload) OVERRIDE;
   virtual void DidStartLoadingFromRenderManager(
@@ skipping 329 matching lines @@
   // Is there an opener associated with this?
   bool has_opener_;
 
   // Color chooser that was opened by this tab.
   content::ColorChooser* color_chooser_;
 
   DISALLOW_COPY_AND_ASSIGN(WebContentsImpl);
 };
 
 #endif  // CONTENT_BROWSER_WEB_CONTENTS_WEB_CONTENTS_IMPL_H_