Roll src/third_party/skia/ 5140f9a8e..4c3cb3767 (2 commits)

https://skia.googlesource.com/skia.git/+log/5140f9a8e424..4c3cb3767f5a

$ git log 5140f9a8e..4c3cb3767 --date=short --no-merges --format='%ad %ae %s'
2018-05-13 reed implement SkScalar versions in terms of float versions
2018-05-14 swiftshader-skia-autoroll Roll third_party/externals/swiftshader/ 5fd1cfaae..2a0def7f6 (1 commit)

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=herb@chromium.org

Change-Id: Ib7de6e241cc17f43b75a2181d6d3a3efd3e229f9
Reviewed-on: https://chromium-review.googlesource.com/1057361Reviewed-by: skia-chromium-autoroll <skia-chromium-autoroll@skia-buildbots.google.com.iam.gserviceaccount.com>
Commit-Queue: skia-chromium-autoroll <skia-chromium-autoroll@skia-buildbots.google.com.iam.gserviceaccount.com>
Cr-Commit-Position: refs/heads/master@{#558330}

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': '5140f9a8e424985c4c354c40c41ca6b0a9b8772a',
+  'skia_revision': '4c3cb3767f5af3860998b932702dc18619ab3e1e',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling V8
   # and whatever else without interference from each other.