Roll Skia from 5cfa7194d55e to e9d783c4d235 (6 revisions)

https://skia.googlesource.com/skia.git/+log/5cfa7194d55e..e9d783c4d235

2020-08-17 reed@google.com use pathbuilder
2020-08-17 kjlubick@google.com [infra] Update go to 1.15
2020-08-17 brianosman@google.com SkSL: Disallow swizzles that *only* contain '0' or '1' components
2020-08-17 robertphillips@google.com Remove some (presumably) unneeded calls to textureParamsModified in GrGLGpu
2020-08-17 johnstiles@google.com Update the Gradient documentation.
2020-08-17 ethannicholas@google.com SkSL now detects modifiers used in incorrect contexts

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

Cq-Include-Trybots: luci.chromium.try:android_optional_gpu_tests_rel;luci.chromium.try:linux-blink-rel;luci.chromium.try:linux-chromeos-compile-dbg;luci.chromium.try:linux_optional_gpu_tests_rel;luci.chromium.try:mac_optional_gpu_tests_rel;luci.chromium.try:win_optional_gpu_tests_rel
Cq-Do-Not-Cancel-Tryjobs: true
Bug: None
Tbr: stani@google.com
Change-Id: Ieded41e80b71c0da36d2cd13713d70dc6e16bc0a
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2359473Reviewed-by: chromium-autoroll <chromium-autoroll@skia-public.iam.gserviceaccount.com>
Commit-Queue: chromium-autoroll <chromium-autoroll@skia-public.iam.gserviceaccount.com>
Cr-Commit-Position: refs/heads/master@{#798923}

DEPS

@@ -195,7 +195,7 @@ vars = {
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling Skia
   # and whatever else without interference from each other.
-  'skia_revision': '5cfa7194d55e066477524b9edeacae9f6f2f758c',
+  'skia_revision': 'e9d783c4d235d6bf8b27de1a1de84ff1ef846fb2',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling V8
   # and whatever else without interference from each other.