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

content/renderer/mouse_lock_dispatcher.cc

Index: content/renderer/mouse_lock_dispatcher.cc
diff --git a/content/renderer/mouse_lock_dispatcher.cc b/content/renderer/mouse_lock_dispatcher.cc
index f801e66ff7cef2c69c9e43f40c2fc45a6a820639..5b42b6e965a209467d4ed7246ec04c962260dd20 100644
--- a/content/renderer/mouse_lock_dispatcher.cc
+++ b/content/renderer/mouse_lock_dispatcher.cc
@@ -12,7 +12,6 @@ namespace content {
 MouseLockDispatcher::MouseLockDispatcher() : mouse_locked_(false),
                                              pending_lock_request_(false),
                                              pending_unlock_request_(false),
-                                             unlocked_by_target_(false),
                                              target_(NULL) {
 }
 
@@ -26,8 +25,7 @@ bool MouseLockDispatcher::LockMouse(LockTarget* target) {
   pending_lock_request_ = true;
   target_ = target;
 
-  SendLockMouseRequest(unlocked_by_target_);
-  unlocked_by_target_ = false;
+  SendLockMouseRequest();
   return true;
 }
 
@@ -35,13 +33,6 @@ 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();
   }
 }