Use the WebTestProxy for layout tests in content_shell

content/shell/shell_render_process_observer.h

 // 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.
 
 #ifndef CONTENT_SHELL_SHELL_RENDER_PROCESS_OBSERVER_H_
 #define CONTENT_SHELL_SHELL_RENDER_PROCESS_OBSERVER_H_
 
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
 #include "base/memory/scoped_ptr.h"
@@ skipping 20 matching lines @@
   virtual ~ShellRenderProcessObserver();
 
   void SetMainWindow(RenderView* view,
                      WebTestRunner::WebTestDelegate* delegate);
   void BindTestRunnersToWindow(WebKit::WebFrame* frame);
 
   // RenderProcessObserver implementation.
   virtual void WebKitInitialized() OVERRIDE;
   virtual bool OnControlMessageReceived(const IPC::Message& message) OVERRIDE;
 
+  WebTestRunner::WebTestInterfaces* test_interfaces() const {
+    return test_interfaces_.get();
+  }
+
  private:
   // Message handlers.
   void OnResetAll();
 
   scoped_ptr<WebTestRunner::WebTestInterfaces> test_interfaces_;
   WebTestRunner::WebTestDelegate* test_delegate_;
 
   DISALLOW_COPY_AND_ASSIGN(ShellRenderProcessObserver);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_SHELL_SHELL_RENDER_PROCESS_OBSERVER_H_