Roll src/third_party/skia/ 82a4c055d..f8393c861 (3 commits)

https://skia.googlesource.com/skia.git/+log/82a4c055d14f..f8393c861975

$ git log 82a4c055d..f8393c861 --date=short --no-merges --format='%ad %ae %s'
2018-02-01 fmalita [skottie] Split-position support
2018-02-01 kjlubick No omit-frame-pointer on Win
2018-02-01 egdaniel Have lazy proxies keep their callbacks around and clean up their lambdas in the dtor

Created with:
  roll-dep src/third_party/skia


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

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=master.tryserver.blink:linux_trusty_blink_rel;master.tryserver.chromium.linux:linux_optional_gpu_tests_rel;master.tryserver.chromium.mac:mac_optional_gpu_tests_rel;master.tryserver.chromium.win:win_optional_gpu_tests_rel
TBR=bungeman@chromium.org

Change-Id: I2331b2990b8bdb68e76271a269f551e61bb84a64
Reviewed-on: https://chromium-review.googlesource.com/896689Reviewed-by: skia-chromium-autoroll <skia-chromium-autoroll@skia-buildbots.google.com.iam.gserviceaccount.com>
Commit-Queue: skia-chromium-autoroll <skia-chromium-autoroll@skia-buildbots.google.com.iam.gserviceaccount.com>
Cr-Commit-Position: refs/heads/master@{#533787}

DEPS

@@ -79,7 +79,7 @@ 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': '82a4c055d14fe942ab05b7f5d4503fc7b92d4b45',
+  'skia_revision': 'f8393c861975350c4ca9d4f6c95b186c081dbbcf',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling V8
   # and whatever else without interference from each other.