GitLab

Currently, the function replaces backslashes with underscores. Do the
same for forward slashes.

Bug: 1041897
Change-Id: I2063992a093d3a8f10f71b452617313783b6bcd1
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2036352Reviewed-by: Will Harris <wfh@chromium.org>
Commit-Queue: Lei Zhang <thestig@chromium.org>
Cr-Commit-Position: refs/heads/master@{#737879}