Roll Dawn from 13f3340173aa to d315022be5b7 (4 revisions)

https://dawn.googlesource.com/dawn.git/+log/13f3340173aa..d315022be5b7

2020-08-13 idanr@google.com Add Metal vertex pulling behind a flag
2020-08-13 idanr@google.com Enable robust buffer access pass if robustness on
2020-08-13 enrico.galli@intel.com Eagerly destroy CommandBuffer commands after submission
2020-08-13 enga@chromium.org Roll 5 dependencies

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/+doc/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@google.com
Change-Id: Ia1cc063c33ab4972bad2ef46b129d7c1f4434c63
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2355391Reviewed-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@{#798008}

DEPS

@@ -318,7 +318,7 @@ 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': '13f3340173aa3c10d28655dfa685b5dfead547e9',
+  'dawn_revision': 'd315022be5b7b186c8f2eabd13fbfd81106a053d',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling feed
   # and whatever else without interference from each other.