Use MessageLoopProxy for network message loop.

remoting/protocol/rtp_video_reader.cc

Index: remoting/protocol/rtp_video_reader.cc
diff --git a/remoting/protocol/rtp_video_reader.cc b/remoting/protocol/rtp_video_reader.cc
index 19bf2fbdc9f239865499b184c5dddd0385b12dea..28babd8f3eaf4f293ff33d3b762225cab2241df6 100644
--- a/remoting/protocol/rtp_video_reader.cc
+++ b/remoting/protocol/rtp_video_reader.cc
@@ -23,8 +23,9 @@ RtpVideoReader::PacketsQueueEntry::PacketsQueueEntry()
       packet(NULL) {
 }
 
-RtpVideoReader::RtpVideoReader()
+RtpVideoReader::RtpVideoReader(base::MessageLoopProxy* message_loop)
     : initialized_(false),
+      rtcp_writer_(message_loop),
       last_sequence_number_(0),
       video_stub_(NULL) {
 }