Update and filter the autotest coding style

Removed some editorial language, and language indicating that there
was a sole maintainer (we are now a group of maintainers).

Updated section on submitting patches to reflect that we accept patches
through the Chrome OS gerrit instance.

BUG=b:26912592
TEST=None

Change-Id: Ibf25934fa53c72a9585a6a445933d40ea38b83bf
Reviewed-on: https://chromium-review.googlesource.com/325392
Tested-by: Christopher Wiley <wiley@chromium.org>
Reviewed-by: Dan Shi <dshi@chromium.org>
1 file changed