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

chrome/renderer/media/chrome_webrtc_log_message_delegate.h

Index: chrome/renderer/media/chrome_webrtc_log_message_delegate.h
diff --git a/chrome/renderer/media/chrome_webrtc_log_message_delegate.h b/chrome/renderer/media/chrome_webrtc_log_message_delegate.h
index f8b37d2f98a6bd7ab48f0685799838f8dcf1e839..2d8689cb4c56c367cbf52426e7fa28382ccbd46a 100644
--- a/chrome/renderer/media/chrome_webrtc_log_message_delegate.h
+++ b/chrome/renderer/media/chrome_webrtc_log_message_delegate.h
@@ -8,14 +8,11 @@
 #include <string>
 
 #include "base/memory/shared_memory.h"
+#include "base/single_thread_task_runner.h"
 #include "chrome/common/media/webrtc_logging_message_data.h"
 #include "content/public/renderer/webrtc_log_message_delegate.h"
 #include "ipc/ipc_channel_proxy.h"
 
-namespace base {
-class MessageLoopProxy;
-}
-
 class PartialCircularBuffer;
 class WebRtcLoggingMessageFilter;
 
@@ -28,7 +25,7 @@ class ChromeWebRtcLogMessageDelegate
       public base::NonThreadSafe {
  public:
   ChromeWebRtcLogMessageDelegate(
-      const scoped_refptr<base::MessageLoopProxy>& io_message_loop,
+      const scoped_refptr<base::SingleThreadTaskRunner>& io_message_loop,
       WebRtcLoggingMessageFilter* message_filter);
 
   ~ChromeWebRtcLogMessageDelegate() override;
@@ -45,7 +42,7 @@ class ChromeWebRtcLogMessageDelegate
   void LogMessageOnIOThread(const WebRtcLoggingMessageData& message);
   void SendLogBuffer();
 
-  scoped_refptr<base::MessageLoopProxy> io_message_loop_;
+  scoped_refptr<base::SingleThreadTaskRunner> io_message_loop_;
   bool logging_started_;
   std::vector<WebRtcLoggingMessageData> log_buffer_;