Add WebMediaPlayer::timelineOffset() support to WebMediaPlayerImpl.

media/formats/webm/webm_info_parser.cc

Index: media/formats/webm/webm_info_parser.cc
diff --git a/media/formats/webm/webm_info_parser.cc b/media/formats/webm/webm_info_parser.cc
index ac4f08c40469f14f20136e4f42fe583268d95495..c0f6c6e032812b355a1036be30c63d1c17d66502 100644
--- a/media/formats/webm/webm_info_parser.cc
+++ b/media/formats/webm/webm_info_parser.cc
@@ -74,6 +74,25 @@ bool WebMInfoParser::OnFloat(int id, double val) {
 }
 
 bool WebMInfoParser::OnBinary(int id, const uint8* data, int size) {
+  if (id == kWebMIdDateUTC) {
+    if (size != 8)
+      return false;
+
+    int64 date_in_nanoseconds = 0;
+    for (int i = 0; i < size; ++i)
+      date_in_nanoseconds = (date_in_nanoseconds << 8) | data[i];
+
+    base::Time::Exploded exploded_epoc;

[scherkus (not reviewing), 2014/04/15 00:53:40]

s/epoc/epoch/?

[acolwell GONE FROM CHROMIUM, 2014/04/16 01:01:08]

Done.

+    exploded_epoc.year = 2001;
+    exploded_epoc.month = 1;
+    exploded_epoc.day_of_month = 1;
+    exploded_epoc.hour = 0;
+    exploded_epoc.minute = 0;
+    exploded_epoc.second = 0;
+    exploded_epoc.millisecond = 0;
+    date_utc_ = base::Time::FromUTCExploded(exploded_epoc) +
+        base::TimeDelta::FromMicroseconds(date_in_nanoseconds / 1000);
+  }
   return true;
 }