Use MessageLoopProxy for network message loop.

remoting/protocol/video_writer.cc

Index: remoting/protocol/video_writer.cc
diff --git a/remoting/protocol/video_writer.cc b/remoting/protocol/video_writer.cc
index 2336fe3774a3874420fc8f2702ca71de5f631021..f0d4a537ca3690f6e387a773a26a94f8cf48b2f0 100644
--- a/remoting/protocol/video_writer.cc
+++ b/remoting/protocol/video_writer.cc
@@ -14,12 +14,13 @@ namespace protocol {
 VideoWriter::~VideoWriter() { }
 
 // static
-VideoWriter* VideoWriter::Create(const SessionConfig* config) {
+VideoWriter* VideoWriter::Create(base::MessageLoopProxy* message_loop,
+                                 const SessionConfig* config) {
   const ChannelConfig& video_config = config->video_config();
   if (video_config.transport == ChannelConfig::TRANSPORT_SRTP) {
-    return new RtpVideoWriter();
+    return new RtpVideoWriter(message_loop);
   } else if (video_config.transport == ChannelConfig::TRANSPORT_STREAM) {
-    return new ProtobufVideoWriter();
+    return new ProtobufVideoWriter(message_loop);
   }
   return NULL;
 }