Add helper class for tests using browser process hit testing

content/browser/renderer_host/render_widget_host_view_aura.cc

 // Copyright (c) 2012 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/renderer_host/render_widget_host_view_aura.h"
 
 #include <set>
 #include <utility>
 
 #include "base/auto_reset.h"
@@ skipping 3065 matching lines @@
 }
 
 void RenderWidgetHostViewAura::UnlockCompositingSurface() {
   NOTIMPLEMENTED();
 }
 
 uint32_t RenderWidgetHostViewAura::GetSurfaceIdNamespace() {
   return delegated_frame_host_->GetSurfaceIdNamespace();
 }
 
+cc::SurfaceId RenderWidgetHostViewAura::SurfaceIdForTesting() const {
+  return delegated_frame_host_->SurfaceIdForTesting();
+}
+
 ////////////////////////////////////////////////////////////////////////////////
 // RenderWidgetHostViewBase, public:
 
 // static
 void RenderWidgetHostViewBase::GetDefaultScreenInfo(WebScreenInfo* results) {
   GetScreenInfoForWindow(results, NULL);
 }
 
 }  // namespace content