Roll third_party/externals/swiftshader 4845633..57776df (2 commits)

https://swiftshader.googlesource.com/SwiftShader.git/+log/4845633..57776df


git log 4845633..57776df --date=short --no-merges --format='%ad %ae %s'
2018-06-04 sugoi@google.com Quick build fix
2018-06-04 sugoi@google.com Fixed synchronization issue on MacOS


Created with:
  gclient setdep -r third_party/externals/swiftshader@57776df

The AutoRoll server is located here: https://swiftshader-skia-roll.skia.org

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=halcanary@google.com

Change-Id: Ifa3bd5a5cd9c62f2bf25a80dc73a812a5ee2573f
Reviewed-on: https://skia-review.googlesource.com/131867
Reviewed-by: swiftshader-skia-autoroll <swiftshader-skia-autoroll@skia-buildbots.google.com.iam.gserviceaccount.com>
Commit-Queue: swiftshader-skia-autoroll <swiftshader-skia-autoroll@skia-buildbots.google.com.iam.gserviceaccount.com>
diff --git a/DEPS b/DEPS
index 034437e..006f9eb 100644
--- a/DEPS
+++ b/DEPS
@@ -26,7 +26,7 @@
   "third_party/externals/sfntly"          : "https://chromium.googlesource.com/external/github.com/googlei18n/sfntly.git@b18b09b6114b9b7fe6fc2f96d8b15e8a72f66916",
   "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@48456333769d015c677c2a991e8e95b371fb8e4d",
+  "third_party/externals/swiftshader"     : "https://swiftshader.googlesource.com/SwiftShader@57776df3d004ce7cc51b92e784dd7854ebfff34e",
   #"third_party/externals/v8"              : "https://chromium.googlesource.com/v8/v8.git@5f1ae66d5634e43563b2d25ea652dfb94c31a3b4",
   "third_party/externals/zlib"            : "https://chromium.googlesource.com/chromium/src/third_party/zlib@e7afdfe128e01ca480a28f757b571957befdd962",
 }