GitLab

This also updates the implementation of dawn_platform.h in Chromium
for tracing to match the new function signature in Dawn.

https://dawn.googlesource.com/dawn.git/+log/cab352c2f679..73d5bb57e64f

git log cab352c2f679..73d5bb57e64f --date=short --no-merges --format='%ad %ae %s'
2019-10-28 enga@chromium.org Use enums for trace event categories
2019-10-28 enga@chromium.org perf_tests: Always capture trace events and flush incrementally
2019-10-28 cwallez@chromium.org Make unittests and fuzzers use webgpu.h

Created with:
  gclient setdep -r src/third_party/dawn@73d5bb57e64f

If this roll has caused a breakage, revert this CL and stop the roller
using the controls here:
https://autoroll.skia.org/r/dawn-chromium-autoroll
Please CC cwallez@google.com on the revert to ensure that a human
is aware of the problem.

To report a problem with the AutoRoller itself, please file a bug:
https://bugs.chromium.org/p/skia/issues/entry?template=Autoroller+Bug

Documentation for the AutoRoller is here:
https://skia.googlesource.com/buildbot/+/master/autoroll/README.md

CQ_INCLUDE_TRYBOTS=luci.chromium.try:dawn-linux-x64-deps-rel;luci.chromium.try:dawn-mac-x64-deps-rel;luci.chromium.try:dawn-win10-x64-deps-rel;luci.chromium.try:dawn-win10-x86-deps-rel
Bug: None
TBR=cwallez@chromium.org, kbr@chromium.org

Change-Id: I375a213338e12b4e15e6c49cbf399955fc1857bf
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1885451Reviewed-by: Austin Eng <enga@chromium.org>
Commit-Queue: Austin Eng <enga@chromium.org>
Cr-Commit-Position: refs/heads/master@{#710168}