3 files changed, 4 insertions, 13 deletions
diff --git a/media/base/pipeline.cc b/media/base/pipeline.cc
index 2884c38..ca015a7 100644
--- a/media/base/pipeline.cc
+++ b/media/base/pipeline.cc
@@ -50,8 +50,7 @@ Pipeline::Pipeline(
       text_ended_(false),
       audio_buffering_state_(BUFFERING_HAVE_NOTHING),
       video_buffering_state_(BUFFERING_HAVE_NOTHING),
-      demuxer_(NULL),
-      creation_time_(default_tick_clock_.NowTicks()) {
+      demuxer_(NULL) {
   media_log_->AddEvent(media_log_->CreatePipelineStateChangedEvent(kCreated));
   media_log_->AddEvent(
       media_log_->CreateEvent(MediaLogEvent::PIPELINE_CREATED));
@@ -190,13 +189,6 @@ void Pipeline::SetErrorForTesting(PipelineStatus status) {
 }
 
 void Pipeline::SetState(State next_state) {
-  if (state_ != kPlaying && next_state == kPlaying &&
-      !creation_time_.is_null()) {
-    UMA_HISTOGRAM_TIMES("Media.TimeToPipelineStarted",
-                        default_tick_clock_.NowTicks() - creation_time_);
-    creation_time_ = base::TimeTicks();
-  }
-
   DVLOG(1) << GetStateString(state_) << " -> " << GetStateString(next_state);
 
   state_ = next_state;
diff --git a/media/base/pipeline.h b/media/base/pipeline.h
index b40cd3c..dab0255 100644
--- a/media/base/pipeline.h
+++ b/media/base/pipeline.h
@@ -426,10 +426,6 @@ class MEDIA_EXPORT Pipeline : public DemuxerHost {
 
   PipelineStatistics statistics_;
 
-  // Time of pipeline creation; is non-zero only until the pipeline first
-  // reaches "kStarted", at which point it is used & zeroed out.
-  base::TimeTicks creation_time_;
-
   scoped_ptr<SerialRunner> pending_callbacks_;
 
   base::ThreadChecker thread_checker_;
diff --git a/tools/metrics/histograms/histograms.xml b/tools/metrics/histograms/histograms.xml
index f480a43..4722179 100644
--- a/tools/metrics/histograms/histograms.xml
+++ b/tools/metrics/histograms/histograms.xml
@@ -10201,6 +10201,9 @@ Therefore, the affected-histogram name has to have at least one dot in it.
 </histogram>
 
 <histogram name="Media.TimeToPipelineStarted" units="ms">
+  <obsolete>
+    Removed from code 2014/6/18.
+  </obsolete>
   <owner>scherkus@chromium.org</owner>
   <summary>
     Time in milliseconds from HTML5 media pipeline creation to playing event.