Move //components/test_runner back into //content/shell

components/test_runner/mock_web_media_stream_center.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 COMPONENTS_TEST_RUNNER_MOCK_WEB_MEDIA_STREAM_CENTER_H_
-#define COMPONENTS_TEST_RUNNER_MOCK_WEB_MEDIA_STREAM_CENTER_H_
-
-#include "base/macros.h"
-#include "third_party/WebKit/public/platform/WebMediaStreamCenter.h"
-
-namespace blink {
-class WebAudioSourceProvider;
-};
-
-namespace test_runner {
-
-class MockWebMediaStreamCenter : public blink::WebMediaStreamCenter {
- public:
-  MockWebMediaStreamCenter() = default;
-  ~MockWebMediaStreamCenter() override {};
-
-  void didEnableMediaStreamTrack(
-      const blink::WebMediaStreamTrack& track) override;
-  void didDisableMediaStreamTrack(
-      const blink::WebMediaStreamTrack& track) override;
-  bool didAddMediaStreamTrack(const blink::WebMediaStream& stream,
-                              const blink::WebMediaStreamTrack& track) override;
-  bool didRemoveMediaStreamTrack(
-      const blink::WebMediaStream& stream,
-      const blink::WebMediaStreamTrack& track) override;
-  void didStopLocalMediaStream(const blink::WebMediaStream& stream) override;
-  bool didStopMediaStreamTrack(
-      const blink::WebMediaStreamTrack& track) override;
-  void didCreateMediaStream(blink::WebMediaStream& stream) override;
-  blink::WebAudioSourceProvider* createWebAudioSourceFromMediaStreamTrack(
-      const blink::WebMediaStreamTrack& track) override;
-
- private:
-  DISALLOW_COPY_AND_ASSIGN(MockWebMediaStreamCenter);
-};
-
-}  // namespace test_runner
-
-#endif  // COMPONENTS_TEST_RUNNER_MOCK_WEB_MEDIA_STREAM_CENTER_H_