Roll src/third_party/dawn d59fec5d706e..1093c4de2cfa (3 commits)

https://dawn.googlesource.com/dawn.git/+log/d59fec5d706e..1093c4de2cfa

git log d59fec5d706e..1093c4de2cfa --date=short --no-merges --format='%ad %ae %s'
2019-10-15 yizhou.jiang@intel.com Add a toggle to turn off vsync in Dawn
2019-10-15 enga@chromium.org Fix compilation with MSVC of volatile assignment operator
2019-10-15 cwallez@chromium.org Vulkan: Remove two ASSERT(false) with more detailed reading of Vk spec.

Created with:
  gclient setdep -r src/third_party/dawn@1093c4de2cfa

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: I926064dc3e887020e7502ed65f76b8fbf112e351
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1862234Reviewed-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@{#705900}

DEPS

@@ -302,7 +302,7 @@ 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': 'd59fec5d706eb7ff403e83ae69ed999a3c13f6df',
+  'dawn_revision': '1093c4de2cfad715f0da1460aafbf88f47bd7bb1',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling feed
   # and whatever else without interference from each other.