Roll src/third_party/dawn 61e170b3c5f6..d56b69f115e2 (1 commits)

https://dawn.googlesource.com/dawn.git/+log/61e170b3c5f6..d56b69f115e2

git log 61e170b3c5f6..d56b69f115e2 --date=short --first-parent --format='%ad %ae %s'
2020-04-09 cwallez@chromium.org Skip Float16 TextureFormatTests on Swiftshader

Created with:
  gclient setdep -r src/third_party/dawn@d56b69f115e2

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
Bug: None
Tbr: cwallez@google.com
Change-Id: I1823b44f72eb1e0a30d5d6c5647b1bb4583d4c4e
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2143567Reviewed-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@{#757776}

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': '61e170b3c5f67da84bb28aca17abe78208732c36',
+  'dawn_revision': 'd56b69f115e25f7e76adaa2724952ce44280f9d6',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling feed
   # and whatever else without interference from each other.