content/child: Remove use of MessageLoopProxy and deprecated MessageLoop APIs

content/renderer/pepper/pepper_platform_audio_input.h

Index: content/renderer/pepper/pepper_platform_audio_input.h
diff --git a/content/renderer/pepper/pepper_platform_audio_input.h b/content/renderer/pepper/pepper_platform_audio_input.h
index a567ed4cb003e4f885a289f3b84c01cee01dd8ad..ae5a6109cce8a9bb610dd6873363f67dfc3af817 100644
--- a/content/renderer/pepper/pepper_platform_audio_input.h
+++ b/content/renderer/pepper/pepper_platform_audio_input.h
@@ -18,6 +18,7 @@
 class GURL;
 
 namespace base {
+class SingleThreadTaskRunner;
 class MessageLoopProxy;
 }
 
@@ -104,7 +105,7 @@ class PepperPlatformAudioInput
   scoped_ptr<media::AudioInputIPC> ipc_;
 
   scoped_refptr<base::MessageLoopProxy> main_message_loop_proxy_;
-  scoped_refptr<base::MessageLoopProxy> io_message_loop_proxy_;
+  scoped_refptr<base::SingleThreadTaskRunner> io_task_runner_;
 
   // The frame containing the Pepper widget.
   int render_frame_id_;