GitLab

BUG=233420
TEST=http/tests/media/media-source/webkitmediasource-errors.html LayoutTests
      now passes w/o crashing.

Review URL: https://chromiumcodereview.appspot.com/15927003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@202671 0039d316-1c4b-4281-b951-d872f2087c98