Roll Dawn from 5b007a519a28 to b88b1a15c7e4 (7 revisions)

https://dawn.googlesource.com/dawn.git/+log/5b007a519a28..b88b1a15c7e4

2020-07-29 cwallez@chromium.org Revert "dawn_wire: Implement CreateBufferMapped on top of mappedAtCreation"
2020-07-29 tommek@google.com Enabling sampleMask usage in RenderPipelineMTL
2020-07-29 kainino@chromium.org CMake: add -framework Metal to dawn_native
2020-07-28 rharrison@chromium.org Enable WGSL support by default
2020-07-28 kainino@chromium.org Disable "all" warnings when compiling MSL code
2020-07-28 cwallez@chromium.org dawn_wire: Implement CreateBufferMapped on top of mappedAtCreation
2020-07-28 tommek@google.com Rolling shader deps

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: I568def435c550370b3790ec2bd972d63fe2c668e
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2325666Reviewed-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@{#792636}

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': '5b007a519a28b4638ef58e6781c5fdf34c49e6e7',
+  'dawn_revision': 'b88b1a15c7e4cde561cd7e69be452c1be68467e6',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling feed
   # and whatever else without interference from each other.