Add WebMediaPlayer::timelineOffset() support to WebMediaPlayerImpl.

media/ffmpeg/ffmpeg_common.cc

Index: media/ffmpeg/ffmpeg_common.cc
diff --git a/media/ffmpeg/ffmpeg_common.cc b/media/ffmpeg/ffmpeg_common.cc
index 344e2656b9d4c4b004947aaf25df2e3ca01fb7e4..abc2a1a87d247a2f0968edac11ed6d63dca093d4 100644
--- a/media/ffmpeg/ffmpeg_common.cc
+++ b/media/ffmpeg/ffmpeg_common.cc
@@ -8,6 +8,7 @@
 #include "base/logging.h"
 #include "base/metrics/histogram.h"
 #include "base/strings/string_number_conversions.h"
+#include "base/strings/string_util.h"
 #include "media/base/decoder_buffer.h"
 #include "media/base/video_frame.h"
 #include "media/base/video_util.h"
@@ -550,4 +551,37 @@ PixelFormat VideoFormatToPixelFormat(VideoFrame::Format video_format) {
   return PIX_FMT_NONE;
 }
 
+bool FFmpegUTCDateToTime(const char* date_utc,
+                         base::Time* out) {
+  DCHECK(date_utc);
+  DCHECK(out);
+
+  std::vector<std::string> fields;
+  std::vector<std::string> date_fields;
+  std::vector<std::string> time_fields;
+  base::Time::Exploded exploded;
+  exploded.millisecond = 0;
+
+  // TODO(acolwell): Update this parsing code when FFmpeg returns sub-second
+  // information.
+  if ((Tokenize(date_utc, " ", &fields) == 2) &&
+      (Tokenize(fields[0], "-", &date_fields) == 3) &&
+      (Tokenize(fields[1], ":", &time_fields) == 3) &&
+      base::StringToInt(date_fields[0], &exploded.year) &&
+      base::StringToInt(date_fields[1], &exploded.month) &&
+      base::StringToInt(date_fields[2], &exploded.day_of_month) &&
+      base::StringToInt(time_fields[0], &exploded.hour) &&
+      base::StringToInt(time_fields[1], &exploded.minute) &&
+      base::StringToInt(time_fields[2], &exploded.second)) {
+    base::Time parsed_time = base::Time::FromUTCExploded(exploded);
+    if (parsed_time.is_null())
+      return false;
+
+    *out = parsed_time;
+    return true;
+  }
+
+  return false;
+}
+
 }  // namespace media