Roll src/third_party/dawn f6281a5530c0..cab352c2f679 (2 commits)

https://dawn.googlesource.com/dawn.git/+log/f6281a5530c0..cab352c2f679

git log f6281a5530c0..cab352c2f679 --date=short --no-merges --format='%ad %ae %s'
2019-10-28 cwallez@chromium.org Make end2end and perf tests use webgpu.h
2019-10-28 bryan.bernhart@intel.com D3D12: Use CheckHRESULT for allocator errors.

Created with:
  gclient setdep -r src/third_party/dawn@cab352c2f679

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/+/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
TBR=cwallez@google.com

Bug: None
Change-Id: Ib41e3f1e20f6c19ae9169ff14fcf25912cfb7885
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1884512Reviewed-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@{#709998}

DEPS

@@ -306,7 +306,7 @@ 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': 'f6281a5530c0f04529b8e330b1020f8c722485d8',
+  'dawn_revision': 'cab352c2f6793f22ff0ea6f2717ff9039cbfc0c4',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling feed
   # and whatever else without interference from each other.