Roll src/third_party/skia f5bc8fba9573..eca1091a52a8 (7 commits)

https://skia.googlesource.com/skia.git/+log/f5bc8fba9573..eca1091a52a8

git log f5bc8fba9573..eca1091a52a8 --date=short --first-parent --format='%ad %ae %s'
2020-01-09 herb@google.com Add first, last and subspan to SkEnumerate
2020-01-09 rmistry@google.com Update go.skia.org/infra in go.mod/go.sum
2020-01-09 reed@google.com Remove legacy canvas-matrix impl
2020-01-09 robertphillips@google.com Improve handling of anisotropic scaling for stroked rects
2020-01-09 mtklein@google.com add vroundps, impl Op::floor on x86
2020-01-09 reed@google.com Optimize concat44 on canvas
2020-01-09 mtklein@google.com add x-macro over SkVM::Ops

Created with:
  gclient setdep -r src/third_party/skia@eca1091a52a8

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 jvanverth@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

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
Bug: chromium:935303
Tbr: jvanverth@google.com
Change-Id: I06835978689935e4a69e0ba28a4d3170fcea9628
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1993383Reviewed-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@{#729774}

DEPS

@@ -181,7 +181,7 @@ 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': 'f5bc8fba95737140784435f5f6e22aaa0ce0340b',
+  'skia_revision': 'eca1091a52a8c0d1a964d3faf1b513adffa351d8',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling V8
   # and whatever else without interference from each other.