Add helper class for tests using browser process hit testing

content/browser/frame_host/render_widget_host_view_child_frame.h

 // 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.
 
 #ifndef CONTENT_BROWSER_FRAME_HOST_RENDER_WIDGET_HOST_VIEW_CHILD_FRAME_H_
 #define CONTENT_BROWSER_FRAME_HOST_RENDER_WIDGET_HOST_VIEW_CHILD_FRAME_H_
 
 #include <stddef.h>
 #include <stdint.h>
 
@@ skipping 160 matching lines @@
 
   // cc::SurfaceFactoryClient implementation.
   void ReturnResources(const cc::ReturnedResourceArray& resources) override;
   void SetBeginFrameSource(cc::SurfaceId surface_id,
                            cc::BeginFrameSource* begin_frame_source) override;
 
   // Declared 'public' instead of 'protected' here to allow derived classes
   // to Bind() to it.
   void SurfaceDrawn(uint32_t output_surface_id, cc::SurfaceDrawStatus drawn);
 
+  // Exposed for tests.
+  cc::SurfaceId SurfaceIdForTesting() const override;
+  CrossProcessFrameConnector* FrameConnectorForTesting() const {
+    return frame_connector_;
+  }
+
  protected:
   friend class RenderWidgetHostView;
   friend class RenderWidgetHostViewChildFrameTest;
   friend class RenderWidgetHostViewGuestSurfaceTest;
 
   // Clears current compositor surface, if one is in use.
   void ClearCompositorSurfaceIfNecessary();
 
   void ProcessFrameSwappedCallbacks();
 
@@ skipping 34 matching lines @@
   // it convenient to swap() when processing the list.
   FrameSwappedCallbackList frame_swapped_callbacks_;
 
   base::WeakPtrFactory<RenderWidgetHostViewChildFrame> weak_factory_;
   DISALLOW_COPY_AND_ASSIGN(RenderWidgetHostViewChildFrame);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_FRAME_HOST_RENDER_WIDGET_HOST_VIEW_CHILD_FRAME_H_