Add checks for 'DO NOT''SUBMIT' in description and file content

NoTry: true
Bug: skia:
Change-Id: I5ce8c40a7deae690b04e7fbe4ac22fa63888ffc7
Reviewed-on: https://skia-review.googlesource.com/45882
Reviewed-by: Ben Wagner <benjaminwagner@google.com>
Commit-Queue: Ravi Mistry <rmistry@google.com>
1 file changed