Update user gesture related code to the new WebKit API

content/renderer/render_view_mouse_lock_dispatcher.cc

 // 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.
 
 #include "content/renderer/render_view_mouse_lock_dispatcher.h"
 
 #include "content/common/view_messages.h"
 #include "content/renderer/render_view_impl.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebFrame.h"
+#include "third_party/WebKit/Source/WebKit/chromium/public/WebUserGestureIndicator.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebView.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebWidget.h"
 
+using WebKit::WebUserGestureIndicator;
+
 namespace content {
 
 RenderViewMouseLockDispatcher::RenderViewMouseLockDispatcher(
     RenderViewImpl* render_view_impl)
     : RenderViewObserver(render_view_impl),
       render_view_impl_(render_view_impl) {
 }
 
 RenderViewMouseLockDispatcher::~RenderViewMouseLockDispatcher() {
 }
 
 void RenderViewMouseLockDispatcher::SendLockMouseRequest(
     bool unlocked_by_target) {
-  bool user_gesture =
-      render_view_impl_->webview() &&
-      render_view_impl_->webview()->mainFrame() &&
-      render_view_impl_->webview()->mainFrame()->isProcessingUserGesture();
+  bool user_gesture = WebUserGestureIndicator::isProcessingUserGesture();
 
   Send(new ViewHostMsg_LockMouse(routing_id(), user_gesture, unlocked_by_target,
                                  false));
 }
 
 void RenderViewMouseLockDispatcher::SendUnlockMouseRequest() {
   Send(new ViewHostMsg_UnlockMouse(routing_id()));
 }
 
 bool RenderViewMouseLockDispatcher::OnMessageReceived(
@@ skipping 17 matching lines @@
   // .movementX/Y values on events all sent to a fixed target. This requires
   // content to specifically request the mode to be entered.
   // Mouse Capture is implicitly given for the duration of a drag event, and
   // sends all mouse events to the initial target of the drag.
   // If Lock is entered it supercedes any in progress Capture.
   if (succeeded && render_view_impl_->webwidget())
     render_view_impl_->webwidget()->mouseCaptureLost();
 }
 
 }  // namespace content