This corrects/normalizes license headers in misc. files, such as
config files, docs, build tools, tests, and externs. This does not
affect the compiled output, and is only done for consistency.
Issue #2638
Change-Id: I9d8da2de55243b08d7df2b743aac73c6f15e858a
This adds or augments type info for TextTrack, Cue, and related types.
This was caught by a compiler upgrade.
Issue #2528
Change-Id: I233e46eeaed8d6503702e181c3380d674ddbb499