Roll src/third_party/skia/ ffbe93296..d234afdc2 (17 commits)

https://skia.googlesource.com/skia.git/+log/ffbe93296838..d234afdc2e56

$ git log ffbe93296..d234afdc2 --date=short --no-merges --format='%ad %ae %s'
2018-04-13 bungeman Remove SkPaint::kGenA8FromLCD_Flag.
2018-04-16 kjlubick Fix many return-std-move-in-c++11 warnings
2018-04-16 fmalita Remove unused BW mask blitters
2018-04-16 mtklein disable -Wself-assign in Google3
2018-04-16 mtklein skcms→2667f0a Add skcms_BestSingleCurve utility
2018-04-16 reed optimize fast/simple case in raster tiling
2018-04-13 liyuqian Simplify the operation on atomic fIsFinishing
2018-04-13 liyuqian Let SkCoverageDeltaList store width and use it during blitting
2018-04-11 liyuqian SkBlitter is not thread safe; make one for each thread.
2018-04-12 liyuqian Snap the bitmap as it may be changed later
2018-04-16 halcanary SkPDF: use std::aligned_storage for typed union
2018-04-16 rmistry Some Chromium bots have been LUCIfied
2018-04-16 angle-skia-autoroll Roll third_party/externals/angle2/ 76b2c3852..a4fa9c278 (3 commits)
2018-04-16 egdaniel Don't allow ganesh to allocate mip maps for wrapped textures.
2018-04-10 bsalomon Draw stroked circles with round caps analytically.
2018-04-16 liyuqian Reland "Cumulate deltas even if they're out of the clip"
2018-04-16 caryclark document SkColor.h

Created with:
  roll-dep src/third_party/skia
BUG=chromium:818693,chromium:820245,chromium:820470


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;luci.chromium.try:android_optional_gpu_tests_rel;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=scroggo@chromium.org

Change-Id: If635e8f9d3bdfb9b34afb9ba244c0a1cc269c868
Reviewed-on: https://chromium-review.googlesource.com/1014413
Commit-Queue: skia-chromium-autoroll <skia-chromium-autoroll@skia-buildbots.google.com.iam.gserviceaccount.com>
Reviewed-by: skia-chromium-autoroll <skia-chromium-autoroll@skia-buildbots.google.com.iam.gserviceaccount.com>
Cr-Commit-Position: refs/heads/master@{#551166}

DEPS

@@ -86,7 +86,7 @@ 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': 'ffbe93296838c3a93a87261cae7f7229b56f1f8a',
+  'skia_revision': 'd234afdc2e562d395925ca3ac8294398608271a6',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling V8
   # and whatever else without interference from each other.