Detect non-ascii characters during presubmit
Detect non-ascii characters during presubmit

Clang format and non-ascii characters don't get along well, which are
typically introduced when copy/pasting spec language. This CL will
detect non-ascii characters during presubmit.

Bug: angleproject:4601
Test: git cl presubmit --upload
Change-Id: I80080fc04590ad47c9756f8f969d5c7f44d41793
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2173684
Reviewed-by: Shrek Shao <7ae796039b2f0529765a6c4b0ab8ce931d949d23@google.com>
Reviewed-by: Jamie Madill <7e492b4f1c8458024932de3ba475cbf015424c30@chromium.org>
Commit-Queue: Tim Van Patten <c7814369a8d3d5671c484acc7b3215f1bf4221be@google.com>

ppy/angle,ppy/angle,ppy/angle,ppy/angle