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

chrome/browser/ui/exclusive_access/flash_fullscreen_interactive_browsertest.cc

 // Copyright 2014 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 "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/location.h"
 #include "base/macros.h"
 #include "base/message_loop/message_loop.h"
 #include "base/single_thread_task_runner.h"
@@ skipping 409 matching lines @@
   content::WebContents* web_contents = GetActiveWebContents();
   EXPECT_TRUE(ObserveFlashHasFocus(web_contents, true));
 
   // Try to lock the mouse.
   content::RenderWidgetHostView* fullscreen_view =
       web_contents->GetFullscreenRenderWidgetHostView();
   content::RenderWidgetHost* fullscreen_widget =
       fullscreen_view->GetRenderWidgetHost();
   content::RenderProcessHost* process = fullscreen_widget->GetProcess();
   content::PwnMessageHelper::LockMouse(
-      process, fullscreen_widget->GetRoutingID(), true, false, true);
+      process, fullscreen_widget->GetRoutingID(), true, true);
 
   // Make sure that the fullscreen widget got the mouse lock.
   EXPECT_TRUE(fullscreen_view->IsMouseLocked());
   EXPECT_EQ(fullscreen_widget, content::GetMouseLockWidget(web_contents));
 
   PressEscape();
   EXPECT_TRUE(ObserveTabIsInFullscreen(false));
 
   // Mouse should be unlocked.
   EXPECT_EQ(nullptr, content::GetMouseLockWidget(web_contents));
 }