Roll src/third_party/skia/ a11f7d0a5..56610207e (4 commits)

https://skia.googlesource.com/skia.git/+log/a11f7d0a5991..56610207ead6

$ git log a11f7d0a5..56610207e --date=short --no-merges --format='%ad %ae %s'
2018-04-24 angle-skia-autoroll Roll third_party/externals/angle2/ 66410530a..f2807385c (3 commits)
2018-04-23 jvanverth Minor shadow fixes.
2018-04-24 skcms-skia-autoroll Roll skia/third_party/skcms cca4d5d..e19e9b9 (1 commits)
2018-04-24 bungeman Compile with latest clang 7.

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;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: Iaac76bca12cb05d4dfb3f4634678aea0cc68b44e
Reviewed-on: https://chromium-review.googlesource.com/1026983
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@{#553417}

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': 'a11f7d0a5991bd991698ec5375850e9c69e2692b',
+  'skia_revision': '56610207ead62edaa844a40e08a17f21fb3c755e',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling V8
   # and whatever else without interference from each other.