Files.app: mpeg metadata parser must not be stateful.

Files.app: mpeg metadata parser must not be stateful.

The previous code writes the parsed metadata to |metadata| dictionary
remembered in |this.rootParser_|, but this is wrong.

The parser class is shared among multiple parses, so to correctly
distinguish concurrent parsing activity, it cannot store states
in the member fields.

BUG=172989
Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=283545

[yoshiki, 2014-07-16 10:45:49]

lgtm

[kinaba, 2014-07-16 11:06:25]

The CQ bit was checked by kinaba@chromium.org

[commit-bot: I haz the power, 2014-07-16 11:08:57]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/kinaba@chromium.org/391313003/1

[commit-bot: I haz the power, 2014-07-16 14:11:51]

FYI, CQ is re-trying this CL (attempt #1).
The failing builders are:
  android_dbg_triggered_tests on tryserver.chromium
(http://build.chromium.org/p/tryserver.chromium/builders/android_dbg_triggered...)

[commit-bot: I haz the power, 2014-07-16 14:30:39]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2014-07-16 14:30:40]

Try jobs failed on following builders:
  android_dbg_triggered_tests on tryserver.chromium
(http://build.chromium.org/p/tryserver.chromium/builders/android_dbg_triggered...)

[kinaba, 2014-07-16 15:43:08]

The CQ bit was checked by kinaba@chromium.org

[commit-bot: I haz the power, 2014-07-16 15:44:59]

CQ is trying da patch. Follow status at
 https://chromium-status.appspot.com/cq/kinaba@chromium.org/391313003/1

[commit-bot: I haz the power, 2014-07-16 22:19:10]

Change committed as 283545