Do not try to convert point to root coordinate space when |local_frame_id_| is invalid.

content/browser/frame_host/render_widget_host_view_child_frame.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 "content/browser/frame_host/render_widget_host_view_child_frame.h"
 
 #include <algorithm>
 #include <utility>
 #include <vector>
 
@@ skipping 501 matching lines @@
 }
 
 void RenderWidgetHostViewChildFrame::ProcessGestureEvent(
     const blink::WebGestureEvent& event,
     const ui::LatencyInfo& latency) {
   host_->ForwardGestureEventWithLatencyInfo(event, latency);
 }
 
 gfx::Point RenderWidgetHostViewChildFrame::TransformPointToRootCoordSpace(
     const gfx::Point& point) {
-  if (!frame_connector_)
+  if (!frame_connector_ || !local_frame_id_.is_valid())
     return point;
 
   return frame_connector_->TransformPointToRootCoordSpace(
       point, cc::SurfaceId(frame_sink_id_, local_frame_id_));
 }
 
 bool RenderWidgetHostViewChildFrame::TransformPointToLocalCoordSpace(
     const gfx::Point& point,
     const cc::SurfaceId& original_surface,
     gfx::Point* transformed_point) {
@@ skipping 199 matching lines @@
 
 bool RenderWidgetHostViewChildFrame::IsChildFrameForTesting() const {
   return true;
 }
 
 cc::SurfaceId RenderWidgetHostViewChildFrame::SurfaceIdForTesting() const {
   return cc::SurfaceId(frame_sink_id_, local_frame_id_);
 };
 
 }  // namespace content