Add client and host dispatchers for video_stats channel to send video stats from host to client.

remoting/protocol/client_video_stats_dispatcher.h

Index: remoting/protocol/client_video_stats_dispatcher.h
diff --git a/remoting/protocol/client_video_stats_dispatcher.h b/remoting/protocol/client_video_stats_dispatcher.h
new file mode 100644
index 0000000000000000000000000000000000000000..a430b036a84931ab752af20bc340df7938609cb3
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+++ b/remoting/protocol/client_video_stats_dispatcher.h
@@ -0,0 +1,40 @@
+// Copyright 2016 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.
+
+#ifndef REMOTING_PROTOCOL_CLIENT_VIDEO_STATE_DISPATCHER_H_
+#define REMOTING_PROTOCOL_CLIENT_VIDEO_STATE_DISPATCHER_H_
+
+#include <list>
+
+#include "base/compiler_specific.h"
+#include "base/macros.h"
+#include "base/memory/weak_ptr.h"
+#include "remoting/base/constants.h"
+#include "remoting/protocol/channel_dispatcher_base.h"
+#include "third_party/webrtc/modules/desktop_capture/desktop_geometry.h"
+
+namespace remoting {
+namespace protocol {
+
+class ClientStub;
+class VideoStatsStub;
+
+class ClientVideoStatsDispatcher : public ChannelDispatcherBase {
+ public:
+  ClientVideoStatsDispatcher(const std::string& stream_name,
+                             VideoStatsStub* video_stats_stub);
+  ~ClientVideoStatsDispatcher() override;
+
+ private:
+  void OnIncomingMessage(std::unique_ptr<CompoundBuffer> message) override;
+
+  VideoStatsStub* video_stats_stub_;
+
+  DISALLOW_COPY_AND_ASSIGN(ClientVideoStatsDispatcher);
+};
+
+}  // namespace protocol
+}  // namespace remoting
+
+#endif  // REMOTING_PROTOCOL_CLIENT_VIDEO_STATE_DISPATCHER_H_