Stop pushing the value of 'default' to LoadableTextTrack
This value is only used during track selection, and caching the value
should have little impact since this is not a very performance-sensitive
code-path. Simply check for existance of the attribute instead.
This also works around an issue with ASAN and inline-capacity Vectors.
BUG=464065
Review URL: https://codereview.chromium.org/993613005
git-svn-id: svn://svn.chromium.org/blink/trunk@191652 bbb929c8-8fbe-4397-9dbb-9b2b20218538
4 files changed
