Roll src/third_party/swiftshader 3e6f60b3096f..e4605daf9407 (3 commits)

https://swiftshader.googlesource.com/SwiftShader.git/+log/3e6f60b3096f..e4605daf9407


git log 3e6f60b3096f..e4605daf9407 --date=short --no-merges --format='%ad %ae %s'
2019-05-09 bclayton@google.com SpirvShader: Implement OpArrayLength
2019-05-09 bclayton@google.com SpirvShader: Implement OpCopyObject
2019-05-09 chrisforbes@google.com Set up uniform texel buffers as SampledImageDescriptor


Created with:
  gclient setdep -r src/third_party/swiftshader@e4605daf9407

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/132336662,chromium:b/132333003,chromium:b/132336537
TBR=swiftshader-team+autoroll@google.com

Change-Id: I5c48de13ab2da1d892935dfce5812ba3c4ac9d3d
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1602558Reviewed-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@{#658239}

DEPS

@@ -149,7 +149,7 @@ 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': '3e6f60b3096f71903f88cc53d1b7b65bb60d1d28',
+  'swiftshader_revision': 'e4605daf94072178961031d66016b4590b7d79e4',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling PDFium
   # and whatever else without interference from each other.