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

content/browser/renderer_host/render_widget_host_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_RENDERER_HOST_RENDER_WIDGET_HOST_IMPL_H_
 #define CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_IMPL_H_
 #pragma once
 
 #include <deque>
 #include <string>
@@ skipping 391 matching lines @@
 
   // Called when auto-resize resulted in the renderer size changing.
   virtual void OnRenderAutoResized(const gfx::Size& new_size) {}
 
   // ---------------------------------------------------------------------------
 
   // RenderViewHost overrides this method to impose further restrictions on when
   // to allow mouse lock.
   // Once the request is approved or rejected, GotResponseToLockMouseRequest()
   // will be called.
-  virtual void RequestToLockMouse();
+  virtual void RequestToLockMouse(bool user_gesture);
 
   void RejectMouseLockOrUnlockIfNecessary();
   bool IsMouseLocked() const;
 
   // RenderViewHost overrides this method to report when in fullscreen mode.
   virtual bool IsFullscreen() const;
 
   // Indicates if the render widget host should track the render widget's size
   // as opposed to visa versa.
   void SetShouldAutoResize(bool enable);
@@ skipping 51 matching lines @@
   void OnMsgDidChangeNumTouchEvents(int count);
 
   void OnMsgSetCursor(const WebCursor& cursor);
   void OnMsgTextInputStateChanged(ui::TextInputType type,
                                   bool can_compose_inline);
   void OnMsgImeCompositionRangeChanged(const ui::Range& range);
   void OnMsgImeCancelComposition();
 
   void OnMsgDidActivateAcceleratedCompositing(bool activated);
 
-  void OnMsgLockMouse();
+  void OnMsgLockMouse(bool user_gesture);
   void OnMsgUnlockMouse();
 
 #if defined(OS_POSIX) || defined(USE_AURA)
   void OnMsgGetWindowRect(gfx::NativeViewId window_id, gfx::Rect* results);
   void OnMsgGetRootWindowRect(gfx::NativeViewId window_id, gfx::Rect* results);
 #endif
 #if defined(OS_MACOSX)
   void OnMsgPluginFocusChanged(bool focused, int plugin_id);
   void OnMsgStartPluginIme();
   void OnAllocateFakePluginWindowHandle(bool opaque,
@@ skipping 214 matching lines @@
   base::WeakPtrFactory<RenderWidgetHostImpl> weak_factory_;
 
   scoped_ptr<TapSuppressionController> tap_suppression_controller_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderWidgetHostImpl);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_RENDERER_HOST_RENDER_WIDGET_HOST_IMPL_H_