Roll src/third_party/dawn eac7382eb232..604072bc2ed0 (2 commits)

https://dawn.googlesource.com/dawn.git/+log/eac7382eb232..604072bc2ed0

git log eac7382eb232..604072bc2ed0 --date=short --no-merges --format='%ad %ae %s'
2019-11-12 cwallez@chromium.org Make the SwapChain interface match webgpu.h
2019-11-12 brandon1.jones@intel.com Implement D3D12 Native Render Passes

Created with:
  gclient setdep -r src/third_party/dawn@604072bc2ed0

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: Ie0eabe6854e21014dba4fcfe620aa91eb05cda37
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1912694Reviewed-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@{#714792}

DEPS

@@ -303,7 +303,7 @@ 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': 'eac7382eb2324c206f642bacf099f89f00d4e30f',
+  'dawn_revision': '604072bc2ed01018eb03bcbbf9d94042f679af63',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling feed
   # and whatever else without interference from each other.