Roll SwiftShader from 12c9d4ac61f2 to dc8e77f0e521 (6 revisions)

https://swiftshader.googlesource.com/SwiftShader.git/+log/12c9d4ac61f2..dc8e77f0e521

2020-07-29 sugoi@google.com Work around dEQP-VK output_location test flakiness
2020-07-28 capn@google.com Expose VK_EXT_image_robustness support
2020-07-28 capn@google.com Perform texel replacement on out-of-bounds OpImageFetch accesses
2020-07-28 capn@google.com Perform out-of-bounds checks on texel pointers
2020-07-28 amaiorano@google.com Add CMake script to setup and build ANGLE
2020-07-28 amaiorano@google.com Add ANGLE as submodule

If this roll has caused a breakage, revert this CL and stop the roller
using the controls here:
https://autoroll.skia.org/r/swiftshader-skia-autoroll
Please CC borenet@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:Test-Debian10-Clang-GCE-GPU-SwiftShader-x86_64-Debug-All-SwiftShader
Bug: None
Tbr: borenet@google.com
Change-Id: Ia61107ade413c3fd0ba29c79b731da7df34ed1bc
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/306310
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

@@ -37,7 +37,7 @@ deps = {
   "third_party/externals/spirv-cross"     : "https://chromium.googlesource.com/external/github.com/KhronosGroup/SPIRV-Cross@d573a95a9c65cf0ab76c0c206e3b01fa47235836",
   "third_party/externals/spirv-headers"   : "https://skia.googlesource.com/external/github.com/KhronosGroup/SPIRV-Headers.git@c0df742ec0b8178ad58c68cff3437ad4b6a06e26",
   "third_party/externals/spirv-tools"     : "https://skia.googlesource.com/external/github.com/KhronosGroup/SPIRV-Tools.git@e95fbfb1f509ad7a7fdfb72ac35fe412d72fc4a4",
-  "third_party/externals/swiftshader"     : "https://swiftshader.googlesource.com/SwiftShader@12c9d4ac61f26e787dfe4ea256b2e1b8fa35e040",
+  "third_party/externals/swiftshader"     : "https://swiftshader.googlesource.com/SwiftShader@dc8e77f0e52145b7e0c63eb36c1482e66b87fbff",
   #"third_party/externals/v8"              : "https://chromium.googlesource.com/v8/v8.git@5f1ae66d5634e43563b2d25ea652dfb94c31a3b4",
   "third_party/externals/wuffs"           : "https://skia.googlesource.com/external/github.com/google/wuffs.git@00cc8a50aa0c86b6bcb37e9ece8fb100047cc17b",
   "third_party/externals/zlib"            : "https://chromium.googlesource.com/chromium/src/third_party/zlib@eaf99a4e2009b0e5759e6070ad1760ac1dd75461",