Roll third_party/SwiftShader 6c3dc3581eaf..79b36b640692 (13 commits)

https://swiftshader.googlesource.com/SwiftShader.git/+log/6c3dc3581eaf..79b36b640692

git log 6c3dc3581eaf..79b36b640692 --date=short --first-parent --format='%ad %ae %s'
2020-01-30 capn@google.com Fix use after free
2020-01-30 capn@google.com Have Kokoro accept imports from Piper
2020-01-30 amaiorano@google.com Subzero: fix incorrect cast
2020-01-30 capn@google.com Export Vulkan API entry functions
2020-01-30 capn@google.com Support LLVM 9+ build changes
2020-01-30 bclayton@google.com Regres: Fix unix build
2020-01-29 capn@google.com Regres: aways use build output path for ICD json
2020-01-29 capn@google.com Associate bug IDs with unimplemented functionality
2020-01-29 amaiorano@google.com Fix memory leak in rr::Optimizer
2020-01-29 bclayton@google.com Regres: Make it work on windows.
2020-01-29 amaiorano@google.com Subzero: implement coroutines for Win32
2020-01-29 bclayton@google.com SpirvShaderDebugger: Expose builtins in HLSL / GLSL.
2020-01-29 bclayton@google.com Vulkan/Debug: Add VariableContainer::extend()

Created with:
  gclient setdep -r third_party/SwiftShader@79b36b6406

If this roll has caused a breakage, revert this CL and stop the roller
using the controls here:
https://autoroll.skia.org/r/swiftshader-angle-autoroll
Please CC tobine@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

Bug: None
Tbr: tobine@google.com
Change-Id: I9ef2fb4008e8f9061df5b71bbf532f20a9caf188
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2032848
Reviewed-by: angle-autoroll <angle-autoroll@skia-public.iam.gserviceaccount.com>
Commit-Queue: angle-autoroll <angle-autoroll@skia-public.iam.gserviceaccount.com>

DEPS

@@ -182,7 +182,7 @@ deps = {
   },
 
   'third_party/SwiftShader': {
-    'url': '{swiftshader_git}/SwiftShader@6c3dc3581eaf4345c0507d5ac7bb013d55351547',
+    'url': '{swiftshader_git}/SwiftShader@79b36b640692e3b4561642c06ec36a9e02a1636c',
     'condition': 'not build_with_chromium',
   },