Revert 96089 - Remove video_channel() from Session interface

remoting/protocol/video_reader.h

Index: remoting/protocol/video_reader.h
===================================================================
--- remoting/protocol/video_reader.h	(revision 96105)
+++ remoting/protocol/video_reader.h	(working copy)
@@ -1,4 +1,4 @@
-// Copyright (c) 2011 The Chromium Authors. All rights reserved.
+// Copyright (c) 2010 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.
 
@@ -25,17 +25,12 @@
  public:
   static VideoReader* Create(const SessionConfig* config);
 
-  // The callback is called when initialization is finished. The
-  // parameter is set to true on success.
-  typedef base::Callback<void(bool)> InitializedCallback;
-
   virtual ~VideoReader();
 
   // Initializies the reader. Doesn't take ownership of either |connection|
   // or |video_stub|.
   virtual void Init(Session* session,
-                    VideoStub* video_stub,
-                    const InitializedCallback& callback) = 0;
+                    VideoStub* video_stub) = 0;
 
  protected:
   VideoReader() { }