Roll src/third_party/skia ffdc3e668061..2e29ab5b03aa (12 commits) (#12374)

https://skia.googlesource.com/skia.git/+log/ffdc3e668061..2e29ab5b03aa

git log ffdc3e668061..2e29ab5b03aa --date=short --no-merges --format='%ad %ae %s'
2019-09-20 brianosman@google.com added support for user-defined functions to GrSKSLFP
2019-09-20 robertphillips@google.com Remove a usage of GrPixelConfig in SkGpuBlurUtils::GaussianBlur (take 2)
2019-09-20 ethannicholas@google.com Revert "added support for SkSL unpremul function"
2019-09-20 vasilyt@chromium.org Added missed ETC2 case to GrVkFormatColorTypePairIsValid
2019-09-20 reed@google.com call Graphics Init() to get faster asm
2019-09-20 brianosman@google.com Reland "Use saveLayer-determined CT in SkGpuDevice::onCreateDevice"
2019-09-20 ethannicholas@google.com regenerated fragment processors to make bot happy
2019-09-20 brianosman@google.com Revert "Use saveLayer-determined CT in SkGpuDevice::onCreateDevice"
2019-09-20 nifong@google.com Added functions supporting a resource view for images in the debugger.
2019-09-20 brianosman@google.com Use saveLayer-determined CT in SkGpuDevice::onCreateDevice
2019-09-20 brianosman@google.com Run gn format
2019-09-20 brianosman@google.com Use 64 bit shift to make MSVC happy

Created with:
  gclient setdep -r src/third_party/skia@2e29ab5b03aa

If this roll has caused a breakage, revert this CL and stop the roller
using the controls here:
https://autoroll.skia.org/r/skia-flutter-autoroll
Please CC brianosman@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=brianosman@google.com

DEPS

@@ -26,7 +26,7 @@ vars = {
   'skia_git': 'https://skia.googlesource.com',
   # OCMock is for testing only so there is no google clone
   'ocmock_git': 'https://github.com/erikdoe/ocmock.git',
-  'skia_revision': 'ffdc3e668061cff14ea55ba087e9105f2ff219fc',
+  'skia_revision': '2e29ab5b03aa03372a34b8fcf51a85c41eaf8eeb',
 
   # When updating the Dart revision, ensure that all entries that are
   # dependencies of Dart are also updated to match the entries in the

ci/licenses_golden/licenses_skia

-Signature: b8b6d42c21a66758623c6ce56b7bac2f
+Signature: 7847181e7e6cde1af4ab06479d0286a4
 
 UNUSED LICENSES:
 
@@ -3785,6 +3785,7 @@ FILE: ../../../third_party/skia/gm/crbug_908646.cpp
 FILE: ../../../third_party/skia/gm/crbug_946965.cpp
 FILE: ../../../third_party/skia/gm/patharcto.cpp
 FILE: ../../../third_party/skia/gm/runtimecolorfilter.cpp
+FILE: ../../../third_party/skia/gm/runtimefunctions.cpp
 FILE: ../../../third_party/skia/gm/runtimeshader.cpp
 FILE: ../../../third_party/skia/gm/skbug_9319.cpp
 FILE: ../../../third_party/skia/include/effects/SkImageFilters.h