Roll src/third_party/skia/ dab15f7a0..5fba7ad39 (2 commits)

https://skia.googlesource.com/skia.git/+log/dab15f7a02dd..5fba7ad39a96

$ git log dab15f7a0..5fba7ad39 --date=short --no-merges --format='%ad %ae %s'
2018-03-22 bsalomon Support GL_RGB textures and render targets.
2018-03-22 ethannicholas switched SPIR-V vertexid to vertexindex

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;master.tryserver.chromium.win:win_optional_gpu_tests_rel
TBR=jvanverth@chromium.org

Change-Id: I99e5f03eee3eb31f90f6869762d372b912e602df
Reviewed-on: https://chromium-review.googlesource.com/975924
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@{#545152}

DEPS

@@ -79,7 +79,7 @@ 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': 'dab15f7a02ddaa2a6977a14d5d04955bd39350ab',
+  'skia_revision': '5fba7ad39a96d02c8a23cc20e47c5021b6a85baa',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling V8
   # and whatever else without interference from each other.