[Chromoting] Send DesktopFrame::capturer_id() to client through WebrtcVideoStream

remoting/protocol/frame_stats.h

 // 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_FRAME_STATS_H_
 #define REMOTING_PROTOCOL_FRAME_STATS_H_
 
 #include "base/time/time.h"
+#include "third_party/webrtc/modules/desktop_capture/desktop_capture_types.h"
 
 namespace remoting {
 
 class VideoPacket;
 class FrameStatsMessage;
 
 namespace protocol {
 
 struct HostFrameStats {
   HostFrameStats();
@@ skipping 15 matching lines @@
 
   // Set to TimeDelta::Max() when unknown.
   base::TimeDelta capture_delay = base::TimeDelta::Max();
   base::TimeDelta encode_delay = base::TimeDelta::Max();
   base::TimeDelta capture_pending_delay = base::TimeDelta::Max();
   base::TimeDelta capture_overhead_delay = base::TimeDelta::Max();
   base::TimeDelta encode_pending_delay = base::TimeDelta::Max();
   base::TimeDelta send_pending_delay = base::TimeDelta::Max();
   base::TimeDelta rtt_estimate = base::TimeDelta::Max();
   int bandwidth_estimate_kbps = -1;
+  uint32_t capturer_id = webrtc::DesktopCapturerId::kUnknown;
 };
 
 struct ClientFrameStats {
   ClientFrameStats();
   ClientFrameStats(const ClientFrameStats&);
   ~ClientFrameStats();
   ClientFrameStats& operator=(const ClientFrameStats&);
 
   base::TimeTicks time_received;
   base::TimeTicks time_decoded;
@@ skipping 13 matching lines @@
  public:
   virtual void OnVideoFrameStats(const FrameStats& stats) = 0;
  protected:
   virtual ~FrameStatsConsumer() {}
 };
 
 }  // namespace protocol
 }  // namespace remoting
 
 #endif  // REMOTING_PROTOCOL_FRAME_STATS_H_