Roll Dawn from 698385d4e2b4 to a0758a1aef12 (2 revisions)

https://dawn.googlesource.com/dawn.git/+log/698385d4e2b4..a0758a1aef12

2020-11-18 jiawei.shao@intel.com D3D12: Only enable toggle 'use_dxc' when Dawn can load DXC DLLs
2020-11-17 cwallez@chromium.org Use hermetic XCode on Dawn standalone builders.

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 kainino@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: kainino@google.com
Change-Id: I379ed9c792eb197a14fb8fd6f41b5f37263c38a3
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2545989Reviewed-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@{#828597}

DEPS

@@ -324,7 +324,7 @@ 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': '698385d4e2b4b41cde737a7fe40b119c500962aa',
+  'dawn_revision': 'a0758a1aef12b02216c2df2781d8e1458d6d7da6',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling feed
   # and whatever else without interference from each other.