Roll src/third_party/dawn 120f5d906283..2b82eb290220 (2 commits)

https://dawn.googlesource.com/dawn.git/+log/120f5d906283..2b82eb290220


git log 120f5d906283..2b82eb290220 --date=short --no-merges --format='%ad %ae %s'
2019-06-07 cwallez@chromium.org Fix incorrect ASSERT in vertex validation.
2019-06-07 cwallez@chromium.org Split off the reusable part of the code generator


Created with:
  gclient setdep -r src/third_party/dawn@2b82eb290220

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: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

Change-Id: I54e644d8dba57262e1a11d37f7ddbfe05a9918a6
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1649715Reviewed-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@{#667167}

DEPS

@@ -273,7 +273,7 @@ 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': '120f5d906283d44c5259987f650bc9c8e5b50d08',
+  'dawn_revision': '2b82eb290220668cc1459a591558d20d03614800',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling feed
   # and whatever else without interference from each other.