media: Add extra logging in AudioClock.

media/filters/audio_clock.cc

Index: media/filters/audio_clock.cc
diff --git a/media/filters/audio_clock.cc b/media/filters/audio_clock.cc
index c561c27be0f2e8d71a4bcdcd341a0ac14f860313..c7f18ab7aef1db5197bb39e2e8e9578dcbdb3079 100644
--- a/media/filters/audio_clock.cc
+++ b/media/filters/audio_clock.cc
@@ -81,8 +81,10 @@ void AudioClock::WroteAudio(int frames_written,
 }
 
 base::TimeDelta AudioClock::TimeUntilPlayback(base::TimeDelta timestamp) const {
-  DCHECK(timestamp >= front_timestamp_);
-  DCHECK(timestamp <= back_timestamp_);
+  DCHECK(timestamp >= front_timestamp_) << ": " << timestamp << ", "

[DaleCurtis, 2015/04/28 18:28:12]

I think you can just use DCHECK_GE() now?

[xhwang, 2015/04/28 19:51:14]

Done.

+                                        << front_timestamp_;
+  DCHECK(timestamp <= back_timestamp_) << ": " << timestamp << ", "
+                                       << back_timestamp_;
 
   int64_t frames_until_timestamp = 0;
   double timestamp_us = timestamp.InMicroseconds();