Roll Skia from 6518d77a2200 to 9eb848ae8218 (20 revisions)

[skia-flutter-autoroll]

https://skia.googlesource.com/skia.git/+log/6518d77a2200..9eb848ae8218

2020-09-11 brianosman@google.com Give SwitchCase it's own Statement::Kind value
2020-09-11 bungeman@google.com Add SkFILEStream constructor which takes a size.
2020-09-11 bungeman@google.com Refactor SkFILEStream for clarity.
2020-09-11 johnstiles@google.com Fix warning in Flutter.
2020-09-11 brianosman@google.com Support dangling type references in the IR generator's inliner
2020-09-11 bsalomon@google.com Always make atlas texture index varying a float
2020-09-11 jlavrova@google.com Reland "Removing ICU dependencies from skparagraph BUILD.gn file"
2020-09-11 jzern@google.com DEPS: update libwebp to v1.1.0-28-g55a080e5
2020-09-11 ethannicholas@google.com Moved SkSL type into IRNode, now accessed via a method
2020-09-11 johnstiles@google.com Reland "Add InlineCandidateAnalyzer to locate candidate functions for inlining."
2020-09-11 johnstiles@google.com Pass non-temporary Program::Settings to convertProgram.
2020-09-11 egdaniel@google.com Reduce the amount of forced dedicated allocations we do in Vulkan.
2020-09-11 jmadill@chromium.org Port to ANGLE's GN files
2020-09-11 johnstiles@google.com Revert "Add InlineCandidateAnalyzer to locate candidate functions for inlining."
2020-09-11 johnstiles@google.com Fix inline code generation when literals appear in the argument list.
2020-09-11 fmalita@chromium.org [skottie] Add support for invert/YIQ
2020-09-11 egdaniel@google.com Add support for plumbing GrDstSampleType through Ops and Pipeline creation.
2020-09-11 fmalita@chromium.org [skottie] Initial Displacement Map effect
2020-09-11 ethannicholas@google.com Fixed an SkSL optimizer error around constant propagation
2020-09-11 jmbetancourt@google.com organize deps so that modules/audioplayer is listed as a dep for samples

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 reed@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