Roll src/third_party/swiftshader 4d1f8d05a85a..b328e0d3c319 (8 commits)

https://swiftshader.googlesource.com/SwiftShader.git/+log/4d1f8d05a85a..b328e0d3c319


git log 4d1f8d05a85a..b328e0d3c319 --date=short --no-merges --format='%ad %ae %s'
2019-04-24 bclayton@google.com CMakeList: Remove the CLANG_VERSION_STRING check
2019-04-24 capn@google.com Refactor common sampler code
2019-04-24 capn@google.com Implement basic sampler parameters
2019-04-24 capn@google.com Default to [X,0,0,one] for undefined texture components
2019-04-24 capn@google.com Eliminate fixed-point texture sampling
2019-04-24 bclayton@google.com SpirvShader: Combine DivergentPointer and NonDivergentPointer
2019-04-24 bclayton@google.com Reactor: Add Gather and Scatter instructions.
2019-04-24 bclayton@google.com SpirvShader: Refactor loads and stores. Consider limits.


Created with:
  gclient setdep -r src/third_party/swiftshader@b328e0d3c319

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/129523279,chromium:b/129523279,chromium:b/131224163,chromium:b/131224163,chromium:b/131224163
TBR=swiftshader-team+autoroll@chromium.org

Change-Id: I49307829e66cc2ae10e1520af5f67f828e628847
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1582272Reviewed-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@{#653664}

DEPS

@@ -145,7 +145,7 @@ 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': '4d1f8d05a85a4e8a77034edaa074f7e89ac65bf5',
+  'swiftshader_revision': 'b328e0d3c3196acc4515b2abf4c79661ba8eee66',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling PDFium
   # and whatever else without interference from each other.