Reset 'can_update_offset' on call to ChunkDemuxer::Abort()

BUG=
TEST=ChunkDemuxerTest::TestTimestampOffsetMidParse


Review URL: https://chromiumcodereview.appspot.com/10908180

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@156040 0039d316-1c4b-4281-b951-d872f2087c98
2 files changed