Roll src/third_party/swiftshader 64c44b0c53c4..f96948857780 (3 commits)

https://swiftshader.googlesource.com/SwiftShader.git/+log/64c44b0c53c4..f96948857780


git log 64c44b0c53c4..f96948857780 --date=short --no-merges --format='%ad %ae %s'
2019-02-11 capn@google.com Fix shader call stack size mismatch
2019-02-11 chrisforbes@google.com Use spirv-tools optimizer in GraphicsPipeline
2019-02-11 chrisforbes@google.com Replace Shader,VertexShader,PixelShader with SpirvShader


Created with:
  gclient setdep -r src/third_party/swiftshader@f96948857780

The AutoRoll server is located here: https://autoroll.skia.org/r/swiftshader-chromium-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=luci.chromium.try:android_optional_gpu_tests_rel;luci.chromium.try:linux_optional_gpu_tests_rel;luci.chromium.try:mac_optional_gpu_tests_rel;luci.chromium.try:win_optional_gpu_tests_rel

BUG=chromium:b/124058197,chromium:b/124056625,chromium:b/120799499
TBR=swiftshader-team+autoroll@chromium.org

Change-Id: I432fb2dd749c21d7c7c19a28e34187d5e489f7ee
Reviewed-on: https://chromium-review.googlesource.com/c/1464210
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@{#631116}
1 file changed