Move test runner to a component

content/shell/renderer/test_runner/mock_web_theme_engine.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_SHELL_RENDERER_TEST_RUNNER_MOCK_WEB_THEME_ENGINE_H_
-#define CONTENT_SHELL_RENDERER_TEST_RUNNER_MOCK_WEB_THEME_ENGINE_H_
-
-#include "third_party/WebKit/public/platform/WebThemeEngine.h"
-
-namespace content {
-
-class MockWebThemeEngine : public blink::WebThemeEngine {
- public:
-  virtual ~MockWebThemeEngine() {}
-
-#if !defined(OS_MACOSX)
-  // blink::WebThemeEngine:
-  virtual blink::WebSize getSize(blink::WebThemeEngine::Part);
-  virtual void paint(blink::WebCanvas*,
-                     blink::WebThemeEngine::Part,
-                     blink::WebThemeEngine::State,
-                     const blink::WebRect&,
-                     const blink::WebThemeEngine::ExtraParams*);
-#endif  // !defined(OS_MACOSX)
-};
-
-}  // namespace content
-
-#endif  // CONTENT_SHELL_RENDERER_TEST_RUNNER_MOCK_WEB_THEME_ENGINE_H_