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

content/browser/frame_host/cross_process_frame_connector.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/cross_process_frame_connector.h"
 
 #include "cc/surfaces/surface.h"
 #include "cc/surfaces/surface_manager.h"
 #include "content/browser/compositor/surface_utils.h"
 #include "content/browser/frame_host/frame_tree.h"
@@ skipping 154 matching lines @@
   if (rwhv)
     static_cast<RenderWidgetHostViewBase*>(rwhv)->GetScreenInfo(results);
 }
 
 void CrossProcessFrameConnector::UpdateCursor(const WebCursor& cursor) {
   RenderWidgetHostViewBase* root_view = GetRootRenderWidgetHostView();
   if (root_view)
     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() {
   RenderWidgetHostViewBase* root_view = GetRootRenderWidgetHostView();
   if (root_view)
     return root_view->HasFocus();
   return false;
 }
 
 void CrossProcessFrameConnector::OnForwardInputEvent(
@@ skipping 70 matching lines @@
   // in the case of nested WebContents.
   while (top_host->frame_tree_node()->render_manager()->ForInnerDelegate()) {
     top_host = top_host->frame_tree_node()->render_manager()->
         GetOuterDelegateNode()->frame_tree()->root()->current_frame_host();
   }
 
   return static_cast<RenderWidgetHostViewBase*>(top_host->GetView());
 }
 
 }  // namespace content