Migrate MediaStream test code from content/shell/renderer/ to content/test/.

content/shell/renderer/shell_media_stream_client.h

-// Copyright 2013 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_SHELL_MEDIA_STREAM_CLIENT_H_
-#define CONTENT_SHELL_RENDERER_SHELL_MEDIA_STREAM_CLIENT_H_
-
-#include "base/callback_forward.h"
-#include "third_party/WebKit/public/platform/WebURL.h"
-#include "webkit/renderer/media/media_stream_client.h"
-
-namespace content {
-
-// ShellMediaStreamClient is a mock implementation of
-// webkit_media::MediaStreamClient used when running layout tests.
-class ShellMediaStreamClient : public webkit_media::MediaStreamClient {
- public:
-  ShellMediaStreamClient();
-  virtual ~ShellMediaStreamClient();
-
-  // webkit_media::MediaStreamClient implementation.
-  virtual bool IsMediaStream(const GURL& url) OVERRIDE;
-  virtual scoped_refptr<webkit_media::VideoFrameProvider> GetVideoFrameProvider(
-      const GURL& url,
-      const base::Closure& error_cb,
-      const webkit_media::VideoFrameProvider::RepaintCB& repaint_cb) OVERRIDE;
-  virtual scoped_refptr<webkit_media::MediaStreamAudioRenderer>
-      GetAudioRenderer(const GURL& url) OVERRIDE;
-};
-
-}  // namespace content
-
-#endif  // CONTENT_SHELL_RENDERER_SHELL_MEDIA_STREAM_CLIENT_H_