Roll Dawn from 47a3341e07d6 to 3fb9c1bbfb23 (2 revisions)

https://dawn.googlesource.com/dawn.git/+log/47a3341e07d6..3fb9c1bbfb23

2020-06-02 enga@chromium.org Add warning for non-c-typedef-for-linkage
2020-06-02 enga@chromium.org Skip creating the VkImageView if the texture usage is only Copy

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/+doc/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: chromium:1064305
Tbr: cwallez@google.com
Change-Id: Ib8232e6adf2acf911b79104944eec45a6dd7b00c
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2226966Reviewed-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@{#774313}

DEPS

@@ -305,7 +305,7 @@ 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': '47a3341e07d60d9f72850c6143141601174be242',
+  'dawn_revision': '3fb9c1bbfb2354053da778a99c6129bafc8f317e',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling feed
   # and whatever else without interference from each other.