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

content/renderer/mouse_lock_dispatcher.h

Index: content/renderer/mouse_lock_dispatcher.h
diff --git a/content/renderer/mouse_lock_dispatcher.h b/content/renderer/mouse_lock_dispatcher.h
index 546088ea96253d2ca2a4ee097ec65e7ad73a90bc..b3bb8f364ed8ed86e3a989a56934582fcd229e58 100644
--- a/content/renderer/mouse_lock_dispatcher.h
+++ b/content/renderer/mouse_lock_dispatcher.h
@@ -53,7 +53,7 @@ class CONTENT_EXPORT MouseLockDispatcher {
  protected:
   // Subclasses must implement these methods to send mouse lock requests to the
   // browser.
-  virtual void SendLockMouseRequest(bool unlocked_by_target) = 0;
+  virtual void SendLockMouseRequest() = 0;
   virtual void SendUnlockMouseRequest() = 0;
 
  private:
@@ -69,11 +69,6 @@ class CONTENT_EXPORT MouseLockDispatcher {
   bool pending_lock_request_;
   bool pending_unlock_request_;
 
-  // Used when locking to indicate when a target application has voluntarily
-  // unlocked and desires to relock the mouse. If the mouse is unlocked due
-  // to ESC being pressed by the user, this will be false
-  bool unlocked_by_target_;
-
   // |target_| is the pending or current owner of mouse lock. We retain a non
   // owning reference here that must be cleared by |OnLockTargetDestroyed|
   // when it is destroyed.