Prevent coordinate transformation when targeting the root RWHV

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 526 matching lines @@
 
   return frame_connector_->TransformPointToLocalCoordSpace(
       point, original_surface, cc::SurfaceId(frame_sink_id_, local_frame_id_),
       transformed_point);
 }
 
 bool RenderWidgetHostViewChildFrame::TransformPointToCoordSpaceForView(
     const gfx::Point& point,
     RenderWidgetHostViewBase* target_view,
     gfx::Point* transformed_point) {
-  if (!frame_connector_ || !local_frame_id_.is_valid() || target_view == this)
+  if (!frame_connector_ || !local_frame_id_.is_valid())
     return false;
 
+  if (target_view == this) {
+    *transformed_point = point;
+    return true;
+  }
+
   return frame_connector_->TransformPointToCoordSpaceForView(
       point, target_view, cc::SurfaceId(frame_sink_id_, local_frame_id_),
       transformed_point);
 }
 
 bool RenderWidgetHostViewChildFrame::IsRenderWidgetHostViewChildFrame() {
   return true;
 }
 
 #if defined(OS_MACOSX)
@@ skipping 174 matching lines @@
 
 bool RenderWidgetHostViewChildFrame::IsChildFrameForTesting() const {
   return true;
 }
 
 cc::SurfaceId RenderWidgetHostViewChildFrame::SurfaceIdForTesting() const {
   return cc::SurfaceId(frame_sink_id_, local_frame_id_);
 };
 
 }  // namespace content