Implement pointer lock API for out-of-process iframes.

content/browser/renderer_host/render_widget_host_impl.cc

Index: content/browser/renderer_host/render_widget_host_impl.cc
diff --git a/content/browser/renderer_host/render_widget_host_impl.cc b/content/browser/renderer_host/render_widget_host_impl.cc
index 30a0e7cb3ea0df150c5e3ece2689d71e9f56f896..dd81f2741e3b09173e17e8d8e32a61f2b3ff50a7 100644
--- a/content/browser/renderer_host/render_widget_host_impl.cc
+++ b/content/browser/renderer_host/render_widget_host_impl.cc
@@ -746,12 +746,14 @@ void RenderWidgetHostImpl::SetActive(bool active) {
 }
 
 void RenderWidgetHostImpl::LostMouseLock() {
-  Send(new ViewMsg_MouseLockLost(routing_id_));
-
   if (delegate_)
     delegate_->LostMouseLock(this);
 }
 
+void RenderWidgetHostImpl::SendMouseLockLost() {
+  Send(new ViewMsg_MouseLockLost(routing_id_));
+}
+
 void RenderWidgetHostImpl::ViewDestroyed() {
   RejectMouseLockOrUnlockIfNecessary();
 
@@ -1777,10 +1779,6 @@ void RenderWidgetHostImpl::OnLockMouse(bool user_gesture,
     Send(new ViewMsg_LockMouse_ACK(routing_id_, false));
     return;
   }
-  if (IsMouseLocked()) {
-    Send(new ViewMsg_LockMouse_ACK(routing_id_, true));
-    return;
-  }
 
   pending_mouse_lock_request_ = true;
   if (privileged && allow_privileged_mouse_lock_) {