Roll third_party/externals/swiftshader 763b779..ee98b42 (3 commits)

https://swiftshader.googlesource.com/SwiftShader.git/+log/763b77946e17..ee98b422d004


git log 763b779..ee98b42 --date=short --no-merges --format='%ad %ae %s'
2019-07-17 capn@google.com Normalize B8G8R8A8 identically to R8G8B8A8
2019-07-17 sugoi@google.com MacOS WSI
2019-07-17 bclayton@google.com Regres: Adjust test transition rules for CI reporting


Created with:
  gclient setdep -r third_party/externals/swiftshader@ee98b422d004

The AutoRoll server is located here: https://autoroll.skia.org/r/swiftshader-skia-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=skia.primary:Test-Debian9-Clang-GCE-GPU-SwiftShader-x86_64-Debug-All-SwiftShader
TBR=nifong@google.com

Change-Id: I474786663824983451567614bcef50e536e7eb3d
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/228319
Reviewed-by: skia-autoroll <skia-autoroll@skia-public.iam.gserviceaccount.com>
Commit-Queue: skia-autoroll <skia-autoroll@skia-public.iam.gserviceaccount.com>

DEPS

@@ -29,7 +29,7 @@ deps = {
   "third_party/externals/sfntly"          : "https://chromium.googlesource.com/external/github.com/googlei18n/sfntly.git@b55ff303ea2f9e26702b514cf6a3196a2e3e2974",
   "third_party/externals/spirv-headers"   : "https://skia.googlesource.com/external/github.com/KhronosGroup/SPIRV-Headers.git@661ad91124e6af2272afd00f804d8aa276e17107",
   "third_party/externals/spirv-tools"     : "https://skia.googlesource.com/external/github.com/KhronosGroup/SPIRV-Tools.git@e9e4393b1c5aad7553c05782acefbe32b42644bd",
-  "third_party/externals/swiftshader"     : "https://swiftshader.googlesource.com/SwiftShader@763b77946e17811b1fed2617434e8886f8a41b42",
+  "third_party/externals/swiftshader"     : "https://swiftshader.googlesource.com/SwiftShader@ee98b422d00439c36ed359e384593c17b211be7e",
   #"third_party/externals/v8"              : "https://chromium.googlesource.com/v8/v8.git@5f1ae66d5634e43563b2d25ea652dfb94c31a3b4",
   "third_party/externals/wuffs"           : "https://skia.googlesource.com/external/github.com/google/wuffs.git@6ad7d00a262e862549e4963b4a43d148a8285e50",
   "third_party/externals/zlib"            : "https://chromium.googlesource.com/chromium/src/third_party/zlib@47af7c547f8551bd25424e56354a2ae1e9062859",