Roll dawn from eec9edfd5769 to ed2b465f8607 (2 revisions)

https://dawn.googlesource.com/dawn.git/+log/eec9edfd5769..ed2b465f8607

2020-09-27 jiawei.shao@intel.com Report more detailed error information for the failures of mapAsync
2020-09-25 hao.x.li@intel.com Query API: QuerySet on Metal

If this roll has caused a breakage, revert this CL and stop the roller
using the controls here:
https://autoroll.skia.org/r/dawn-skia-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: skia/skia.primary:Build-Debian10-Clang-x86_64-Debug-Dawn
Bug: None
Tbr: cwallez@google.com
Change-Id: I02c4b9bd190a508acb0cce3da4989ae009a2157d
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/320078
Reviewed-by: skia-autoroll <skia-autoroll@skia-public.iam.gserviceaccount.com>
Commit-Queue: skia-autoroll <skia-autoroll@skia-public.iam.gserviceaccount.com>

Author: skia-autoroll

DEPS

@@ -11,7 +11,7 @@ deps = {
   "third_party/externals/d3d12allocator"  : "https://skia.googlesource.com/external/github.com/GPUOpen-LibrariesAndSDKs/D3D12MemoryAllocator.git@169895d529dfce00390a20e69c2f516066fe7a3b",
   # Dawn requires jinja2 and markupsafe for the code generator, and glslang and shaderc for SPIRV compilation.
   # When the Dawn revision is updated these should be updated from the Dawn DEPS as well.
-  "third_party/externals/dawn"            : "https://dawn.googlesource.com/dawn.git@eec9edfd5769774d1becf6c2fa8f8241a474c4f4",
+  "third_party/externals/dawn"            : "https://dawn.googlesource.com/dawn.git@ed2b465f860720be30eeba35a56088dc5ba66d46",
   "third_party/externals/glslang"         : "https://chromium.googlesource.com/external/github.com/KhronosGroup/glslang@4dcc12d1a441b29d5901bc708bb1343d29d6459f",
   "third_party/externals/jinja2"          : "https://chromium.googlesource.com/chromium/src/third_party/jinja2@b41863e42637544c2941b574c7877d3e1f663e25",
   "third_party/externals/markupsafe"      : "https://chromium.googlesource.com/chromium/src/third_party/markupsafe@8f45f5cfa0009d2a70589bcda0349b8cb2b72783",