Roll third_party/SwiftShader 41a7302e9c62..8e8e1d0dd729 (4 commits)

https://swiftshader.googlesource.com/SwiftShader.git/+log/41a7302e9c62..8e8e1d0dd729

git log 41a7302e9c62..8e8e1d0dd729 --date=short --first-parent --format='%ad %ae %s'
2020-02-04 bclayton@google.com Shader: Add missing switch cases to operationString
2020-02-04 bclayton@google.com OpenGL: Fix switch with only a default case.
2020-02-04 amaiorano@google.com Regres: fix no env-vars for deqp on Windows
2020-02-04 lfy@google.com android: avoid exporting normal Vulkan APIs

Created with:
  gclient setdep -r third_party/SwiftShader@8e8e1d0dd729

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 cnorthrop@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: cnorthrop@google.com
Change-Id: Ia9ff11bbc842f324e2b65745fd6647cede0ba138
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2038122
Reviewed-by: angle-autoroll <angle-autoroll@skia-public.iam.gserviceaccount.com>
Commit-Queue: angle-autoroll <angle-autoroll@skia-public.iam.gserviceaccount.com>
diff --git a/DEPS b/DEPS
index e0f275e..44c1120 100644
--- a/DEPS
+++ b/DEPS
@@ -182,7 +182,7 @@
   },
 
   'third_party/SwiftShader': {
-    'url': '{swiftshader_git}/SwiftShader@41a7302e9c62c207e5ac5bcce40f16a1e418c42b',
+    'url': '{swiftshader_git}/SwiftShader@8e8e1d0dd7292440b803b95bc0832589520f784d',
     'condition': 'not build_with_chromium',
   },