[chrome/renderer/media] Replace MessageLoopProxy usage with ThreadTaskRunnerHandle

chrome/renderer/media/mock_webrtc_logging_message_filter.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 CHROME_RENDERER_MEDIA_MOCK_WEBRTC_LOGGING_MESSAGE_FILTER_H_
 #define CHROME_RENDERER_MEDIA_MOCK_WEBRTC_LOGGING_MESSAGE_FILTER_H_
 
+#include "base/single_thread_task_runner.h"
 #include "chrome/renderer/media/webrtc_logging_message_filter.h"
 
 class MockWebRtcLoggingMessageFilter
     : public WebRtcLoggingMessageFilter {
  public:
   explicit MockWebRtcLoggingMessageFilter(
-      const scoped_refptr<base::MessageLoopProxy>& io_message_loop);
+      const scoped_refptr<base::SingleThreadTaskRunner>& io_task_runner);
 
   void AddLogMessages(
       const std::vector<WebRtcLoggingMessageData>& messages) override;
   void LoggingStopped() override;
 
   ChromeWebRtcLogMessageDelegate* log_message_delegate() {
     return log_message_delegate_;
   }
 
   std::string log_buffer_;
   bool logging_stopped_;
 
  protected:
   ~MockWebRtcLoggingMessageFilter() override;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(MockWebRtcLoggingMessageFilter);
 };
 
 #endif  // CHROME_RENDERER_MEDIA_MOCK_WEBRTC_LOGGING_MESSAGE_FILTER_H_