Roll src/third_party/skia/ 5b58b7c14..91dfa3b57 (13 commits)

https://skia.googlesource.com/skia.git/+log/5b58b7c14c44..91dfa3b571f1

$ git log 5b58b7c14..91dfa3b57 --date=short --no-merges --format='%ad %ae %s'
2018-05-22 egdaniel Reland "Move gn setup for vulkan library/headers into their own third_party directory."
2018-05-22 bungeman Remove include/gpu/gl from include paths.
2018-05-22 bsalomon Use layered templates for optional vertex attributes in GrTextureOp.
2018-05-22 mtklein start cleaning up non-skcms SkColorSpaceXforms
2018-05-22 egdaniel Add more blacklists for intel 405 vulkan perf bot.
2018-05-22 herb Remove SkTextBox
2018-05-22 bungeman Revert "Revert "IWYU for tests starting with 'D'.""
2018-05-22 senorblanco GrTessellator: fix crash on merging a dead edge.
2018-05-22 benjaminwagner Rename SwiftShader bots from CPU to GPU.
2018-05-22 bungeman Update SampleLua and lua files.
2018-05-22 jcgregorio Revert "Update docs preview URL in presubmit"
2018-05-22 bsalomon GrTextureOp: Rename template params "V" instead of "Vertex".
2018-05-22 angle-skia-autoroll Roll third_party/externals/angle2/ 787338f9b..534b00dbd (1 commit)

Created with:
  roll-dep src/third_party/skia
BUG=chromium:844873


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=allanmac@chromium.org

Change-Id: I3f8ecf7422051adac07c78fe2bac5a8e3a118d2f
Reviewed-on: https://chromium-review.googlesource.com/1069416
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@{#560811}

DEPS

@@ -96,7 +96,7 @@ 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': '5b58b7c14c4405163e2af68dd3951a83fa1dabf2',
+  'skia_revision': '91dfa3b571f1048d70033385de2c0c8b4a07373f',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling V8
   # and whatever else without interference from each other.