GitLab

Use r prefix for strings that have embedded backslashes,
and for any regex expression as that's the norm.

Bug: 983071
Test: `./grit/test_suite_all.py` passes
Change-Id: Id045e3bd9627f6c8234151104d757aeaf1469dbe
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1758425Reviewed-by: Nico Weber <thakis@chromium.org>
Commit-Queue: Mike Frysinger <vapier@chromium.org>
Cr-Commit-Position: refs/heads/master@{#688659}