Roll src/third_party/swiftshader ac07ed82c3b7..96fbe0810a3f (6 commits)

https://swiftshader.googlesource.com/SwiftShader.git/+log/ac07ed82c3b7..96fbe0810a3f


git log ac07ed82c3b7..96fbe0810a3f --date=short --no-merges --format='%ad %ae %s'
2019-04-18 bclayton@google.com Dynamic dispatch for image samplers
2019-04-18 chrisforbes@google.com Factor out GetTexelOffset from EmitImageRead/EmitImageWrite
2019-04-18 chrisforbes@google.com Add support for OpImageRead
2019-04-18 chrisforbes@google.com Add support for OpImageWrite
2019-04-18 chrisforbes@google.com Implement OpImageQuerySize
2019-04-18 chrisforbes@google.com Specialize descriptor contents for storage images


Created with:
  gclient setdep -r src/third_party/swiftshader@96fbe0810a3f

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/130746922,chromium:b/130768731,chromium:b/130768731,chromium:b/130768731,chromium:b/129523279,chromium:b/130768731
TBR=swiftshader-team+autoroll@chromium.org

Change-Id: I9d424509162f05c950c0a754fb9629184019fbaf
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1574240
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@{#652269}