Position autofill popup widgets correctly under --site-per-process

content/browser/frame_host/cross_process_frame_connector.cc

Index: content/browser/frame_host/cross_process_frame_connector.cc
diff --git a/content/browser/frame_host/cross_process_frame_connector.cc b/content/browser/frame_host/cross_process_frame_connector.cc
index 1d8b23c041186c75129f4e8b0e6e2c893fe119a8..fef7ff7a621f0f0362efa0d9e2ce52191dee9aff 100644
--- a/content/browser/frame_host/cross_process_frame_connector.cc
+++ b/content/browser/frame_host/cross_process_frame_connector.cc
@@ -172,15 +172,15 @@ void CrossProcessFrameConnector::UpdateCursor(const WebCursor& cursor) {
     root_view->UpdateCursor(cursor);
 }
 
-void CrossProcessFrameConnector::TransformPointToRootCoordSpace(
+gfx::Point CrossProcessFrameConnector::TransformPointToRootCoordSpace(
     const gfx::Point& point,
-    cc::SurfaceId surface_id,
-    gfx::Point* transformed_point) {
+    cc::SurfaceId surface_id) {
+  gfx::Point transformed_point = point;
   RenderWidgetHostViewBase* root_view = GetRootRenderWidgetHostView();
-  *transformed_point = point;
   if (root_view)
     root_view->TransformPointToLocalCoordSpace(point, surface_id,
-                                               transformed_point);
+                                               &transformed_point);
+  return transformed_point;
 }
 
 bool CrossProcessFrameConnector::HasFocus() {