Roll src/third_party/skia 8207b641f56e..8da1e6560222 (7 commits)

https://skia.googlesource.com/skia.git/+log/8207b641f56e..8da1e6560222


git log 8207b641f56e..8da1e6560222 --date=short --no-merges --format='%ad %ae %s'
2019-05-24 ethannicholas@google.com restructured SkSL include files
2019-05-24 skia-autoroll@skia-public.iam.gserviceaccount.com Roll skia/third_party/skcms 1578d6b6f5dd..622c42a2cf22 (1 commits)
2019-05-24 halcanary@google.com add SkNamedTransferFn::kRec2020
2019-05-24 bsalomon@google.com Enable GL by default if GPU enabled and no backend selected.
2019-05-24 halcanary@google.com replace SkFont::glyphsToUnichars with SkFontPriv::GlyphsToUnichars
2019-05-24 fmalita@chromium.org [skottie] Add kBottom text alignment extension
2019-05-24 bsalomon@google.com Reland "Allow swapping out of GrBackendTexture used by SkSurface"


Created with:
  gclient setdep -r src/third_party/skia@8da1e6560222

The AutoRoll server is located here: https://autoroll.skia.org/r/skia-autoroll

Documentation for the AutoRoller is here:
https://skia.googlesource.com/buildbot/+/master/autoroll/README.md

If the roll is causing failures, please contact the current sheriff, who should
be CC'd on the roll, and stop the roller if necessary.

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
TBR=csmartdalton@google.com

Change-Id: I6d7e4456e77229da5fb06a7c115743d7470aa6ec
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1628660Reviewed-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@{#663150}

DEPS

@@ -138,7 +138,7 @@ 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': '8207b641f56e80efdfcfcf569cbd185bff22185e',
+  'skia_revision': '8da1e6560222ba3046f5ea377c0196db3ba7df09',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling V8
   # and whatever else without interference from each other.