Roll src/third_party/swiftshader 48c8a180b599..8a2441d37d80 (6 commits)

https://swiftshader.googlesource.com/SwiftShader.git/+log/48c8a180b599..8a2441d37d80


git log 48c8a180b599..8a2441d37d80 --date=short --no-merges --format='%ad %ae %s'
2019-05-24 bclayton@google.com vkCmdUpdateBuffer: Make a copy of the data.
2019-05-24 chrisforbes@google.com Fix OpAtomicUMin, OpAtomicUMax
2019-05-24 chrisforbes@google.com Substitute integer 1 for missing 4th component of integer vertex attribute
2019-05-23 bclayton@google.com VkPipeline: Fix unsigned integer underflows in computePrimitiveCount()
2019-05-23 bclayton@google.com VulkanUnitTests: Free / Destroy all Vulkan objects.
2019-05-23 bclayton@google.com ComputeProgram: Don't hold on to the SpirvRoutine.


Created with:
  gclient setdep -r src/third_party/swiftshader@8a2441d37d80

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/133127573,chromium:b/118619338,chromium:b/118383648,chromium:b/133399620,chromium:b/133127573
TBR=swiftshader-team+autoroll@google.com

Change-Id: I7b102c0712a090cc6961d18f653e40f0d9b5c894
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1627582Reviewed-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@{#662940}

DEPS

@@ -154,7 +154,7 @@ vars = {
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling SwiftShader
   # and whatever else without interference from each other.
-  'swiftshader_revision': '48c8a180b599c61cf09cb242cff3479b63dbe8c4',
+  'swiftshader_revision': '8a2441d37d8098ddd85e69963506ebf1a1ee6038',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling PDFium
   # and whatever else without interference from each other.