Roll Dawn from 05863e62f3dc to fada50119020 (2 revisions)

https://dawn.googlesource.com/dawn.git/+log/05863e62f3dc..fada50119020

2020-07-31 jiawei.shao@intel.com Metal: Add shader compilation error message to DAWN_VALIDATION_ERROR
2020-07-30 bryan.bernhart@intel.com D3D12: Dynamic shader-visible heap allocation.

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: Ia6dbca06e2939cd1a891342ddef7df84928b2700
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2331271Reviewed-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@{#793501}

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': '05863e62f3dc20abb3673ce2df77ca3fbe1d6e13',
+  'dawn_revision': 'fada50119020483021a6b620c8fb85d62fc3e8f0',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling feed
   # and whatever else without interference from each other.