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
The built-in externs for DOMStringList in Closure Compiler do not seem
to list it as Iterable. This overrides them to fix it.
This was caught by a compiler upgrade.
Issue #2528
Change-Id: I5a404f2502fce8fc3e956f68f6a51728d68f0654