Roll src/third_party/swiftshader 503b21fd3203..eceeb201f72b (1 commits)

https://swiftshader.googlesource.com/SwiftShader.git/+log/503b21fd3203..eceeb201f72b

git log 503b21fd3203..eceeb201f72b --date=short --first-parent --format='%ad %ae %s'
2020-02-13 bclayton@google.com third_party/marl: Add mips64 support to BUILD.gn

Created with:
  gclient setdep -r src/third_party/swiftshader@eceeb201f72b

If this roll has caused a breakage, revert this CL and stop the roller
using the controls here:
https://autoroll.skia.org/r/swiftshader-chromium-autoroll
Please CC swiftshader-team+autoroll@google.com on the revert to ensure that a human
is aware of the problem.

To report a problem with the AutoRoller itself, please file a bug:
https://bugs.chromium.org/p/skia/issues/entry?template=Autoroller+Bug

Documentation for the AutoRoller is here:
https://skia.googlesource.com/buildbot/+/master/autoroll/README.md

Cq-Include-Trybots: luci.chromium.try:android_optional_gpu_tests_rel;luci.chromium.try:linux_chromium_msan_rel_ng;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: None
Tbr: swiftshader-team+autoroll@google.com
Change-Id: If42b6ec6c26912677fa4074a3f78bb0c7aad63cc
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2055049Reviewed-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@{#741187}

DEPS

@@ -187,7 +187,7 @@ 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': '503b21fd3203c7b9607ef3583a0fe32784d5f877',
+  'swiftshader_revision': 'eceeb201f72b1d63dc53395c63e6f7fc5be9e203',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling PDFium
   # and whatever else without interference from each other.