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

chrome/renderer/media/mock_webrtc_logging_message_filter.cc

 // 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.
 
 #include "chrome/renderer/media/mock_webrtc_logging_message_filter.h"
 
 #include "base/logging.h"
-#include "base/message_loop/message_loop_proxy.h"
+#include "base/single_thread_task_runner.h"
 
 MockWebRtcLoggingMessageFilter::MockWebRtcLoggingMessageFilter(
-    const scoped_refptr<base::MessageLoopProxy>& io_message_loop)
-    : WebRtcLoggingMessageFilter(io_message_loop),
+    const scoped_refptr<base::SingleThreadTaskRunner>& io_task_runner)
+    : WebRtcLoggingMessageFilter(io_task_runner),
       logging_stopped_(false) {
 }
 
 MockWebRtcLoggingMessageFilter::~MockWebRtcLoggingMessageFilter() {
 }
 
 void MockWebRtcLoggingMessageFilter::AddLogMessages(
     const std::vector<WebRtcLoggingMessageData>& messages) {
-  CHECK(io_message_loop_->BelongsToCurrentThread());
+  CHECK(io_task_runner_->BelongsToCurrentThread());
   for (size_t i = 0; i < messages.size(); ++i)
     log_buffer_ += messages[i].message + "\n";
 }
 
 void MockWebRtcLoggingMessageFilter::LoggingStopped() {
-  CHECK(io_message_loop_->BelongsToCurrentThread());
+  CHECK(io_task_runner_->BelongsToCurrentThread());
   logging_stopped_ = true;
 }