Roll src/third_party/swiftshader f25a1c68473b..23742c0958dd (2 commits)

https://swiftshader.googlesource.com/SwiftShader.git/+log/f25a1c68473b..23742c0958dd

git log f25a1c68473b..23742c0958dd --date=short --no-merges --format='%ad %ae %s'
2019-08-21 chrisforbes@google.com Fix linux build with gcc-8.2
2019-08-21 geofflang@chromium.org Support RGB formats with IOSurface client buffer surfaces.

Created with:
  gclient setdep -r src/third_party/swiftshader@23742c0958dd

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
TBR=swiftshader-team+autoroll@google.com

Bug: chromium:995142
Change-Id: Ib5daec1d5ce25cd035e8abbb8863a7ea7acd2bc2
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1764245Reviewed-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@{#689227}

DEPS

@@ -161,7 +161,7 @@ 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': 'f25a1c68473b868ce61e97fe5b830c0cdd7e8181',
+  'swiftshader_revision': '23742c0958ddb7216cbb02cde04109df888cd8db',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling PDFium
   # and whatever else without interference from each other.