Roll third_party/externals/swiftshader aa3f31f98a5c..2bcadf49d820 (8 commits)
Roll third_party/externals/swiftshader aa3f31f98a5c..2bcadf49d820 (8 commits)

https://swiftshader.googlesource.com/SwiftShader.git/+log/aa3f31f98a5c..2bcadf49d820

git log aa3f31f98a5c..2bcadf49d820 --date=short --no-merges --format='%ad %ae %s'
2019-08-15 bclayton@google.com vk::SurfaceKHR: Expose support for VK_IMAGE_USAGE_TRANSFER_SRC_BIT
2019-08-15 chrisforbes@google.com Add missing Reactor/CPUID.cpp to GLES side of build
2019-08-15 capn@google.com Default to LLVM JIT for ARM32 CMake build
2019-08-15 chrisforbes@google.com Jettison android subzero support entirely
2019-08-15 chrisforbes@google.com Add libyarn static library to Android build
2019-08-15 bclayton@google.com SpirvShader: Fix another edge case with phis and loops
2019-08-15 bclayton@google.com VkPipeline: Use vk::warn for spirv-opt warnings / errors
2019-08-15 swiftshader.regress@gmail.com Regres: Update test lists @ aa3f31f9

Created with:
  gclient setdep -r third_party/externals/swiftshader@2bcadf49d820

The AutoRoll server is located here: https://autoroll.skia.org/r/swiftshader-skia-autoroll

Documentation for the AutoRoller is here:
https://skia.googlesource.com/buildbot/+/master/autoroll/README.md

If the roll is causing failures, please contact the current sheriff, who should
be CC'd on the roll, and stop the roller if necessary.


CQ_INCLUDE_TRYBOTS=skia.primary:Test-Debian9-Clang-GCE-GPU-SwiftShader-x86_64-Debug-All-SwiftShader
Bug: None
TBR=scroggo@google.com
Change-Id: I0208b864d8195e1d28fd202810343063bb263972
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/235153
Reviewed-by: skia-autoroll <e034c62197df5622a9c1bef8b3e012f87a0a9840@skia-public.iam.gserviceaccount.com>
Commit-Queue: skia-autoroll <e034c62197df5622a9c1bef8b3e012f87a0a9840@skia-public.iam.gserviceaccount.com>

HalCanary/skia-hc,google/skia,aosp-mirror/platform_external_skia,google/skia,HalCanary/skia-hc,google/skia,HalCanary/skia-hc,HalCanary/skia-hc,aosp-mirror/platform_external_skia,google/skia,aosp-mirror/platform_external_skia,HalCanary/skia-hc,aosp-mirror/platform_external_skia,google/skia,HalCanary/skia-hc,aosp-mirror/platform_external_skia,aosp-mirror/platform_external_skia,HalCanary/skia-hc,HalCanary/skia-hc,aosp-mirror/platform_external_skia,aosp-mirror/platform_external_skia,google/skia,google/skia,google/skia,aosp-mirror/platform_external_skia,aosp-mirror/platform_external_skia,google/skia,HalCanary/skia-hc,google/skia,HalCanary/skia-hc