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

content/renderer/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/mouse_lock_dispatcher.h"
 
 #include "base/logging.h"
 #include "third_party/WebKit/public/platform/WebInputEvent.h"
 
 namespace content {
 
 MouseLockDispatcher::MouseLockDispatcher() : mouse_locked_(false),
                                              pending_lock_request_(false),
                                              pending_unlock_request_(false),
-                                             unlocked_by_target_(false),
                                              target_(NULL) {
 }
 
 MouseLockDispatcher::~MouseLockDispatcher() {
 }
 
 bool MouseLockDispatcher::LockMouse(LockTarget* target) {
   if (MouseLockedOrPendingAction())
     return false;
 
   pending_lock_request_ = true;
   target_ = target;
 
-  SendLockMouseRequest(unlocked_by_target_);
-  unlocked_by_target_ = false;
+  SendLockMouseRequest();
   return true;
 }
 
 void MouseLockDispatcher::UnlockMouse(LockTarget* target) {
   if (target && target == target_ && !pending_unlock_request_) {
     pending_unlock_request_ = true;
 
-    // When a target application voluntarily unlocks the mouse we permit
-    // relocking the mouse silently and with no user gesture requirement.
-    // Check that the lock request is not currently pending and not yet
-    // accepted by the browser process before setting |unlocked_by_target_|.
-    if (!pending_lock_request_)
-      unlocked_by_target_ = true;
-
     SendUnlockMouseRequest();
   }
 }
 
 void MouseLockDispatcher::OnLockTargetDestroyed(LockTarget* target) {
   if (target == target_) {
     UnlockMouse(target);
     target_ = NULL;
   }
 }
@@ skipping 42 matching lines @@
   target_ = NULL;
 
   // Callbacks made after all state modification to prevent reentrant errors
   // such as OnMouseLockLost() synchronously calling LockMouse().
 
   if (last_target)
     last_target->OnMouseLockLost();
 }
 
 }  // namespace content