Roll src/third_party/skia/ 27988f76b..25af671a3 (21 commits)

https://skia.googlesource.com/skia.git/+log/27988f76b25e..25af671a3d7d

$ git log 27988f76b..25af671a3 --date=short --no-merges --format='%ad %ae %s'
2018-04-25 egdaniel Add GrCap check for whether we can do a copy or not, and implement in Vk backend
2018-04-25 borenet [infra] Run presubmit like a normal bot
2018-04-25 skcms-skia-autoroll Roll skia/third_party/skcms a893aa3..2c9b55f (1 commits)
2018-04-25 enne Add CheckGeneratedFiles recipe check for gpu workarounds
2018-04-25 bungeman Clean up xfermodes3 gm.
2018-04-25 skcms-skia-autoroll Roll skia/third_party/skcms 509a65e..a893aa3 (1 commits)
2018-04-25 liyuqian Snap bitmap for SkThreadedBMPDevice::drawBitmapRect
2018-04-25 bsalomon Revert "Revert "Add arcs as a specialized geometry to GrShape.""
2018-04-25 kjlubick Move Baytrail to stretch
2018-04-25 skcms-skia-autoroll Roll skia/third_party/skcms 48c6ca0..509a65e (1 commits)
2018-04-25 skcms-skia-autoroll Roll skia/third_party/skcms 9e351c0..48c6ca0 (1 commits)
2018-04-25 angle-skia-autoroll Roll third_party/externals/angle2/ 023371b3a..f827123d9 (5 commits)
2018-04-25 brianosman Don't 'require' external image extensions, 'enable' them
2018-04-25 reed Experiment to track coverage in a layer
2018-04-25 skcms-skia-autoroll Roll skia/third_party/skcms f3a576b..9e351c0 (1 commits)
2018-04-24 ethannicholas cache SkSL headers
2018-04-24 benjaminwagner Upgrade Win Radeon driver.
2018-04-25 robertphillips Fix GrRRectBlurEffect.fp
2018-04-25 skcms-skia-autoroll Roll skia/third_party/skcms 40a5028..f3a576b (1 commits)
2018-04-25 skcms-skia-autoroll Roll skia/third_party/skcms 86807d3..40a5028 (1 commits)
2018-04-25 kjlubick Migrate ShuttleA bots to Debian9 stretch

Created with:
  roll-dep src/third_party/skia
BUG=chromium: 829614


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=stani@chromium.org

Change-Id: I573306e5aee3463fe005e9f9ae679ee0fa7bdf95
Reviewed-on: https://chromium-review.googlesource.com/1028625
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@{#553758}

DEPS

@@ -90,7 +90,7 @@ 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': '27988f76b25eb54a0cce7d802c3e80565783a90f',
+  'skia_revision': '25af671a3d7d790b31b085172952df3867337431',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling V8
   # and whatever else without interference from each other.