Roll third_party/SwiftShader 45a4d0f36bd6..77c89ff847b6 (13 commits)

https://swiftshader.googlesource.com/SwiftShader.git/+log/45a4d0f36bd6..77c89ff847b6

git log 45a4d0f36bd6..77c89ff847b6 --date=short --first-parent --format='%ad %ae %s'
2020-01-08 bclayton@google.com Build: Verify that we're compiling with C++14.
2020-01-08 bclayton@google.com Build: Move from using C++11 to C++14.
2020-01-08 bclayton@google.com Kokoro: Update from GCC 4.8 to GCC 7.
2020-01-08 bclayton@google.com Pipeline/SpirvShader: Move setActiveLaneMask()
2020-01-08 bclayton@google.com Pipeline/SpirvShader: Support more OpExtInsts
2020-01-08 bclayton@google.com Pipeline/SpirvShader: Process OpString instructions
2020-01-08 bclayton@google.com Pipeline/SpirvShader: Add Impl struct
2020-01-08 bclayton@google.com Vulkan/Debug: Expose Frames from Thread
2020-01-08 sugoi@google.com Enable B10G11R11_UFLOAT blending
2020-01-08 bclayton@google.com Vulkan/Debug: Add Reference value type.
2020-01-08 chrisforbes@google.com Add storage image support for R16G16_{UINT,SINT,SFLOAT}
2020-01-08 bclayton@google.com Vulkan: Plumb the debug context down to SpirvShader
2020-01-08 bclayton@google.com Vulkan: Add debugging of the command buffer.

Created with:
  gclient setdep -r third_party/SwiftShader@77c89ff847b6

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 cwallez@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: cwallez@google.com
Change-Id: I9f7014f2de23f3f9411f07a4b95c0cc48ab5e6ac
Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/1993043
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 8c57280..af3dd28 100644
--- a/DEPS
+++ b/DEPS
@@ -188,7 +188,7 @@
   },
 
   'third_party/SwiftShader': {
-    'url': '{swiftshader_git}/SwiftShader@45a4d0f36bd602f5b202a2961ef64984778d0681',
+    'url': '{swiftshader_git}/SwiftShader@77c89ff847b623b76f8b559562dc4b8f767a621f',
     'condition': 'not build_with_chromium',
   },