Cast: Deduplicate event types in cast library.

media/cast/logging/stats_event_subscriber.h

 // Copyright 2014 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 MEDIA_CAST_LOGGING_STATS_EVENT_SUBSCRIBER_H_
 #define MEDIA_CAST_LOGGING_STATS_EVENT_SUBSCRIBER_H_
 
 #include "base/gtest_prod_util.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/threading/thread_checker.h"
@@ skipping 65 matching lines @@
 
   enum CastStat {
     // Capture frame rate.
     CAPTURE_FPS,
     // Encode frame rate.
     ENCODE_FPS,
     // Decode frame rate.
     DECODE_FPS,
     // Average encode duration in milliseconds.
     // TODO(imcheng): This stat is not populated yet because we do not have
-    // the time when encode started. Record it in kVideoFrameEncoded event.
+    // the time when encode started. Record it in FRAME_ENCODED event.
     AVG_ENCODE_TIME_MS,
     // Average playout delay in milliseconds, with target delay already
     // accounted for. Ideally, every frame should have a playout delay of 0.
     AVG_PLAYOUT_DELAY_MS,
     // Duration from when a packet is transmitted to when it is received.
     // This measures latency from sender to receiver.
     AVG_NETWORK_LATENCY_MS,
     // Duration from when a frame is captured to when it should be played out.
     AVG_E2E_LATENCY_MS,
     // Encode bitrate in kbps.
@@ skipping 70 matching lines @@
   base::TimeTicks start_time_;
 
   base::ThreadChecker thread_checker_;
   DISALLOW_COPY_AND_ASSIGN(StatsEventSubscriber);
 };
 
 }  // namespace cast
 }  // namespace media
 
 #endif  // MEDIA_CAST_LOGGING_STATS_EVENT_SUBSCRIBER_H_