Remove incorrect ASSERT from HTMLMediaElement::hasPendingElement

Remove incorrect ASSERT from HTMLMediaElement::hasPendingElement

R=dpranke@chromium.org,kbr@chromium.org,philipj@opera.com
BUG=400659
Committed: https://src.chromium.org/viewvc/blink?view=rev&revision=182278

[Dirk Pranke, 2014-09-18 20:36:55]

rubber-stamp lgtm.

[jochen (gone - plz use gerrit), 2014-09-18 20:38:31]

The CQ bit was checked by jochen@chromium.org

[commit-bot: I haz the power, 2014-09-18 20:38:53]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patchset/584633004/1

[philipj_slow, 2014-09-18 21:06:58]

Thanks, I'll investigate why if failed and if it can be put back tomorrow.

[Ken Russell (switch to Gerrit), 2014-09-18 21:13:43]

Thanks for helping move this fix forward. Reference bug 400659?

[philipj_slow, 2014-09-18 21:17:05]

Yeah, if anyone can make it BUG=400659 before CQ commits this, please do so :)

[jochen (gone - plz use gerrit), 2014-09-18 21:17:49]

The CQ bit was unchecked by jochen@chromium.org

[jochen (gone - plz use gerrit), 2014-09-18 21:18:13]

The CQ bit was checked by jochen@chromium.org

[commit-bot: I haz the power, 2014-09-18 21:18:28]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patchset/584633004/1

[commit-bot: I haz the power, 2014-09-18 22:01:07]

Committed patchset #1 (id:1) as 182278