Enable content_browsertest MediaSourceTest on Android.

Enable content_browsertest MediaSourceTest on Android.

These tests pass on my Nexus 7 v2. Occasionally I see a timeout in MediaSourceTest.ConfigChangeVideo test but the next retry passes. I'll check if the same thing happens on the test bots later.

BUG=304956
TEST=MediaSourceTest work on Nexus 7 v2.
R=qinmin@chromium.org

Committed: https://src.chromium.org/viewvc/chrome?view=rev&revision=233188

[xhwang, 2013-11-05 17:51:55]

PTAL.

I'll be away shortly. So if it looks good to you please help check the "commit"
box. Thanks.

[qinmin, 2013-11-05 21:27:43]

lgtm

[commit-bot: I haz the power, 2013-11-05 21:49:33]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/xhwang@chromium.org/60433002/1

[commit-bot: I haz the power, 2013-11-05 22:54:20]

Retried try job too often on chromium_presubmit for step(s) presubmit
http://build.chromium.org/p/tryserver.chromium/buildstatus?builder=chromium_p...

[commit-bot: I haz the power, 2013-11-06 01:25:43]

CQ is trying da patch. Follow status at
https://chromium-status.appspot.com/cq/xhwang@chromium.org/60433002/1

[commit-bot: I haz the power, 2013-11-06 02:05:30]

Retried try job too often on chromium_presubmit for step(s) presubmit
http://build.chromium.org/p/tryserver.chromium/buildstatus?builder=chromium_p...

[xhwang, 2013-11-06 02:12:21]

Committed patchset #1 manually as r233188 (presubmit successful).