Roll SwiftShader from 635de036d766 to 952149303d06 (2 revisions)

https://swiftshader.googlesource.com/SwiftShader.git/+log/635de036d766..952149303d06

2020-10-08 bclayton@google.com SpirvShaderDebugger: Have Function inherit LexicalBlock
2020-10-07 capn@google.com Remove float division-by-zero prevention

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 timvp@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/+doc/master/autoroll/README.md

Bug: None
Tbr: timvp@google.com
Change-Id: I46e38b5ec92086f750ce42ae4423fcf8e19700c8
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2461407
Reviewed-by: angle-autoroll <angle-autoroll@skia-public.iam.gserviceaccount.com>
Commit-Queue: angle-autoroll <angle-autoroll@skia-public.iam.gserviceaccount.com>

DEPS

@@ -244,7 +244,7 @@ deps = {
   },
 
   'third_party/SwiftShader': {
-    'url': '{swiftshader_git}/SwiftShader@635de036d766ba7c2f31c89c7227a86b3412e74b',
+    'url': '{swiftshader_git}/SwiftShader@952149303d06de35920f1a3913217f572a3f611c',
     'condition': 'not build_with_chromium',
   },