This Cl updates tools/format to match the various Dawn extensions and to
use the `clang_format.py` file from depot_tools instead of the one from
clang. This fixes up some formatting differences so `tools/format` will
now match `git cl format`.
Bug: dawn:1339
Change-Id: I32a2cdbd2d7e950794268616fae38b5bf54ab370
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/86874
Auto-Submit: Dan Sinclair <dsinclair@chromium.org>
Kokoro: Kokoro <noreply+kokoro@google.com>
Reviewed-by: Ben Clayton <bclayton@google.com>
Reviewed-by: Corentin Wallez <cwallez@chromium.org>
Commit-Queue: Dan Sinclair <dsinclair@chromium.org>
f0469eb65a