Roll src/third_party/swiftshader 3e511440e774..1bc7731e4c72 (2 commits)

https://swiftshader.googlesource.com/SwiftShader.git/+log/3e511440e774..1bc7731e4c72


git log 3e511440e774..1bc7731e4c72 --date=short --no-merges --format='%ad %ae %s'
2019-05-10 chrisforbes@google.com Check sampling support in vkGetPhysicalDeviceImageFormatProperties
2019-05-09 bclayton@google.com SpirvShader: Handle multiple entry points


Created with:
  gclient setdep -r src/third_party/swiftshader@1bc7731e4c72

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/132341142
TBR=swiftshader-team+autoroll@google.com

Change-Id: Ied152be0a491d984ca3e2ab0a8a63218198e7ece
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1604484Reviewed-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@{#658431}

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': '3e511440e7747f25d84e89e32eb30b1060076eff',
+  'swiftshader_revision': '1bc7731e4c7290d3dcef7da9b0afd0708e5e628e',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling PDFium
   # and whatever else without interference from each other.