Roll src/third_party/dawn ef4f3bd17474..bfc9cee5d3be (1 commits)

https://dawn.googlesource.com/dawn.git/+log/ef4f3bd17474..bfc9cee5d3be

git log ef4f3bd17474..bfc9cee5d3be --date=short --no-merges --format='%ad %ae %s'
2019-08-02 cwallez@chromium.org Implement OpArrayLength on Metal

Created with:
  gclient setdep -r src/third_party/dawn@bfc9cee5d3be

The AutoRoll server is located here: https://autoroll.skia.org/r/dawn-chromium-autoroll

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

If the roll is causing failures, please contact the current sheriff, who should
be CC'd on the roll, and stop the roller if necessary.


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
TBR=cwallez@google.com

Bug: None
Change-Id: I00126470e5b7bdc0e73c0efb449d2e762599c8c5
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1733721Reviewed-by: chromium-autoroll <chromium-autoroll@skia-public.iam.gserviceaccount.com>
Commit-Queue: chromium-autoroll <chromium-autoroll@skia-public.iam.gserviceaccount.com>
Cr-Commit-Position: refs/heads/master@{#683825}

DEPS

@@ -280,7 +280,7 @@ vars = {
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling feed
   # and whatever else without interference from each other.
-  'dawn_revision': 'ef4f3bd17474c1362f22e249e68b4b801d17afef',
+  'dawn_revision': 'bfc9cee5d3bea7e37ff26f2952d2d112f3776790',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling feed
   # and whatever else without interference from each other.