Remove event_channel() and control_channel() from Session interface.

remoting/protocol/rtp_video_writer.cc

 // Copyright (c) 2011 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 "remoting/protocol/rtp_video_writer.h"
 
 #include "base/bind.h"
 #include "base/task.h"
 #include "net/base/io_buffer.h"
 #include "remoting/base/compound_buffer.h"
@@ skipping 63 matching lines @@
   rtp_writer_.Close();
   rtp_channel_.reset();
   rtcp_channel_.reset();
   if (session_) {
     session_->CancelChannelCreation(kVideoRtpChannelName);
     session_->CancelChannelCreation(kVideoRtcpChannelName);
     session_ = NULL;
   }
 }
 
+bool RtpVideoWriter::is_connected() {
+  return rtp_channel_.get() && rtcp_channel_.get();
+}
+
 void RtpVideoWriter::ProcessVideoPacket(const VideoPacket* packet,
                                         const base::Closure& done) {
   CHECK(packet->format().encoding() == VideoPacketFormat::ENCODING_VP8)
       << "Only VP8 is supported in RTP.";
 
   CompoundBuffer payload;
   // TODO(sergeyu): This copy would not be necessary CompoundBuffer was used
   // inside of VideoPacket.
   payload.AppendCopyOf(packet->data().data(), packet->data().size());
 
@@ skipping 44 matching lines @@
 
   done.Run();
 }
 
 int RtpVideoWriter::GetPendingPackets() {
   return rtp_writer_.GetPendingPackets();
 }
 
 }  // namespace protocol
 }  // namespace remoting