GitLab

While compiling Dawn with MSVC python3 complained that startswith's
arguments needed to be bytes.

Bug: None
Change-Id: Id6d1a1d536e4e235eacf1818d31e59a6b5b7e122
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2643277
Commit-Queue: Corentin Wallez <cwallez@chromium.org>
Auto-Submit: Corentin Wallez <cwallez@chromium.org>
Reviewed-by: Dirk Pranke <dpranke@google.com>
Cr-Commit-Position: refs/heads/master@{#846017}