Roll Dawn from 97b880e6ff82 to 87f25134a8c1 (6 revisions)

https://dawn.googlesource.com/dawn.git/+log/97b880e6ff82..87f25134a8c1

2020-09-10 jiawei.shao@intel.com Vulkan: Combine all the barriers before dispatch() in one call
2020-09-09 cwallez@chromium.org ShaderModule: Add support for multiple entryPoints
2020-09-09 cwallez@chromium.org D3D12: Make HLSL generation per-entrypoint.
2020-09-09 cwallez@chromium.org OpenGL: Make GLSL generation per-entrypoint.
2020-09-09 cwallez@chromium.org Metal: Use ShaderModule reflection when possible.
2020-09-09 cwallez@chromium.org Make ShaderModuleBase use its own spirv_cross for reflection.

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: None
Tbr: cwallez@google.com
Change-Id: Iab5e3fb61e76576436ce2d0f459a1fad260285cc
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2401731


Reviewed-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@{#805611}