Roll src/third_party/skia/ c186e17a6..a05e199cd (3 commits)

https://skia.googlesource.com/skia.git/+log/c186e17a6b78..a05e199cd962

$ git log c186e17a6..a05e199cd --date=short --no-merges --format='%ad %ae %s'
2018-04-17 bungeman Remove text flag filtering from SkBitmapDevice.
2018-04-17 angle-skia-autoroll Roll third_party/externals/angle2/ 86de76b69..aed1b56aa (5 commits)
2018-04-17 reed show sum of cubic errors

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=scroggo@chromium.org

Change-Id: I61e6a50eed3df7c2493575cca7e0fa328b865220
Reviewed-on: https://chromium-review.googlesource.com/1016165
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@{#551583}

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': 'c186e17a6b78e4897a9180f33b638d6b6cc6d959',
+  'skia_revision': 'a05e199cd962568ed0f5f413d66627e876740702',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling V8
   # and whatever else without interference from each other.