Roll third_party/externals/swiftshader 900e1dac1b2d..e899321b0bf7 (7 commits)

https://swiftshader.googlesource.com/SwiftShader.git/+log/900e1dac1b2d..e899321b0bf7


git log 900e1dac1b2d..e899321b0bf7 --date=short --no-merges --format='%ad %ae %s'
2019-06-24 capn@google.com Refactor remaining cases of memset(this, ...)
2019-06-24 capn@google.com Fix initialization of LRU cache keys
2019-06-24 headlessclayton@gmail.com LLVMReactor: Bind double variants of trig / exp functions
2019-06-24 headlessclayton@gmail.com LLVMReactor: Remove "stack-probe-size" fudge, bind _chkstk extern
2019-06-24 headlessclayton@gmail.com Reactor: Various build fixes for MSVC 2019
2019-06-24 headlessclayton@gmail.com LLVMReactor: Align the coroutine stack frame.
2019-06-24 bclayton@google.com Put LLVM IR verification behind a default-disabled flag


Created with:
  gclient setdep -r third_party/externals/swiftshader@e899321b0bf7

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=djsollen@google.com

Change-Id: I4eb9c0a0bcf90dbb704a0193f6aa85352a58bf81
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/223556
Reviewed-by: skia-autoroll <skia-autoroll@skia-public.iam.gserviceaccount.com>
Commit-Queue: skia-autoroll <skia-autoroll@skia-public.iam.gserviceaccount.com>
diff --git a/DEPS b/DEPS
index a2d1979..6a53abe 100644
--- a/DEPS
+++ b/DEPS
@@ -28,7 +28,7 @@
   "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@900e1dac1b2da6fae567e8e2da7a36f7b2cbd625",
+  "third_party/externals/swiftshader"     : "https://swiftshader.googlesource.com/SwiftShader@e899321b0bf7f8ebcab4a5b4e562474701829b75",
   #"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@f58ffbc927899b9534a273d3057094ce6ac1ed61",
   "third_party/externals/zlib"            : "https://chromium.googlesource.com/chromium/src/third_party/zlib@47af7c547f8551bd25424e56354a2ae1e9062859",