Roll src/third_party/swiftshader 3fc635ac4a7f..b607bc8800c1 (2 commits)

https://swiftshader.googlesource.com/SwiftShader.git/+log/3fc635ac4a7f..b607bc8800c1


git log 3fc635ac4a7f..b607bc8800c1 --date=short --no-merges --format='%ad %ae %s'
2019-02-22 hliatis@google.com vkGetDescriptorSetLayoutSupportKHR listed wrong
2019-02-22 hliatis@google.com Update ICD version to 3.0


Created with:
  gclient setdep -r src/third_party/swiftshader@b607bc8800c1

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/125417927,chromium:b/125405086
TBR=swiftshader-team+autoroll@chromium.org

Change-Id: Iefd68a04a6a1a8acf7b5ba37e0860113e5451ef2
Reviewed-on: https://chromium-review.googlesource.com/c/1482056
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@{#634505}