Roll src/third_party/dawn 2dfb3f01e77d..1c92c159adf9 (2 commits)

https://dawn.googlesource.com/dawn.git/+log/2dfb3f01e77d..1c92c159adf9


git log 2dfb3f01e77d..1c92c159adf9 --date=short --no-merges --format='%ad %ae %s'
2019-03-01 cwallez@chromium.org Fix overflow in CommandAllocator
2019-03-01 cwallez@chromium.org Implement wrapping IOSurfaces in dawn::Texture.


Created with:
  gclient setdep -r src/third_party/dawn@1c92c159adf9

The AutoRoll server is located here: https://autoroll.skia.org/r/dawn-chromium-autoroll

Documentation for the AutoRoller is here:
https://skia.googlesource.com/buildbot/+/master/autoroll/README.md

If the roll is causing failures, please contact the current sheriff, who should
be CC'd on the roll, and stop the roller if necessary.

CQ_INCLUDE_TRYBOTS=luci.chromium.try:linux_optional_gpu_tests_rel;luci.chromium.try:mac_optional_gpu_tests_rel;luci.chromium.try:win_optional_gpu_tests_rel
TBR=cwallez@chromium.org

Change-Id: I08022b2ef038872100a4a65ee964f7eedf52126a
Reviewed-on: https://chromium-review.googlesource.com/c/1496893Reviewed-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@{#636806}

DEPS

@@ -254,7 +254,7 @@ 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': '2dfb3f01e77d1dff4ce611fe8d00c9a11b235f78',
+  'dawn_revision': '1c92c159adf995b450275de69407625328bb2796',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling feed
   # and whatever else without interference from each other.