Roll third_party/SwiftShader d25ce8725224..068611f07d28 (8 commits)
Roll third_party/SwiftShader d25ce8725224..068611f07d28 (8 commits)

https://swiftshader.googlesource.com/SwiftShader.git/+log/d25ce8725224..068611f07d28

git log d25ce8725224..068611f07d28 --date=short --first-parent --format='%ad %ae %s'
2020-04-17 capn@google.com Fix JIT on separate thread
2020-04-17 bclayton@google.com Use Thread Safety Analysis annotations throughout SwiftShader.
2020-04-17 digit@google.com CMakeLists: Fix Fuchsia build.
2020-04-17 bclayton@google.com Merge changes Ia8226c11,If413b9d6
2020-04-17 bclayton@google.com LLVMReactor: Drop codegenMutex, now thread safe.
2020-04-17 bclayton@google.com LLVMJIT: Remove the TargetMachine cache.
2020-04-17 bclayton@google.com LLVM 7: Set LLVM_ENABLE_THREADS to 1
2020-04-17 bclayton@google.com SpirvShader: Fix ASSERT firing in debugger

Created with:
  gclient setdep -r third_party/SwiftShader@068611f07d28

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 c7814369a8d3d5671c484acc7b3215f1bf4221be@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: c7814369a8d3d5671c484acc7b3215f1bf4221be@google.com
Change-Id: I186bb705c9af7638abb1e20edb0bc0011de6cc95
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2156120
Reviewed-by: angle-autoroll <09ea9b8bac6cceb6ec3b72e615745c3a1e982ce2@skia-public.iam.gserviceaccount.com>
Commit-Queue: angle-autoroll <09ea9b8bac6cceb6ec3b72e615745c3a1e982ce2@skia-public.iam.gserviceaccount.com>

ppy/angle,ppy/angle,ppy/angle,ppy/angle