[PointerLock] Move "silent mouse lock" logic from renderer to RWHI

content/renderer/render_widget_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_widget_mouse_lock_dispatcher.h"
 
 #include "content/common/view_messages.h"
 #include "content/renderer/render_view_impl.h"
 #include "ipc/ipc_message.h"
 #include "third_party/WebKit/public/web/WebFrame.h"
 #include "third_party/WebKit/public/web/WebUserGestureIndicator.h"
 #include "third_party/WebKit/public/web/WebView.h"
 #include "third_party/WebKit/public/web/WebWidget.h"
 
 using blink::WebUserGestureIndicator;
 
 namespace content {
 
 RenderWidgetMouseLockDispatcher::RenderWidgetMouseLockDispatcher(
     RenderWidget* render_widget)
     : render_widget_(render_widget) {}
 
 RenderWidgetMouseLockDispatcher::~RenderWidgetMouseLockDispatcher() {}
 
-void RenderWidgetMouseLockDispatcher::SendLockMouseRequest(
-    bool unlocked_by_target) {
+void RenderWidgetMouseLockDispatcher::SendLockMouseRequest() {
   bool user_gesture = WebUserGestureIndicator::IsProcessingUserGesture();
 
-  render_widget_->Send(new ViewHostMsg_LockMouse(
-      render_widget_->routing_id(), user_gesture, unlocked_by_target, false));
+  render_widget_->Send(new ViewHostMsg_LockMouse(render_widget_->routing_id(),
+                                                 user_gesture, false));
 }
 
 void RenderWidgetMouseLockDispatcher::SendUnlockMouseRequest() {
   render_widget_->Send(
       new ViewHostMsg_UnlockMouse(render_widget_->routing_id()));
 }
 
 bool RenderWidgetMouseLockDispatcher::OnMessageReceived(
     const IPC::Message& message) {
   bool handled = true;
@@ skipping 15 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_widget_->GetWebWidget())
     render_widget_->GetWebWidget()->MouseCaptureLost();
 }
 
 }  // namespace content