Roll src/third_party/skia/ 1db215a8e..3f36369a9 (2 commits).

https://skia.googlesource.com/skia.git/+log/1db215a8efb4..3f36369a94d2

$ git log 1db215a8e..3f36369a9 --date=short --no-merges --format='%ad %ae %s'
2017-02-02 bsalomon Batch across matrix changes in drawVertices and add GM to test.
2017-02-02 bsalomon fix up shadow_utils gm dimensions

Documentation for the AutoRoller is here:
https://skia.googlesource.com/buildbot/+/master/autoroll/README.md

If the roll is causing failures, see:
http://www.chromium.org/developers/tree-sheriffs/sheriff-details-chromium#TOC-Failures-due-to-DEPS-rolls

CQ_INCLUDE_TRYBOTS=master.tryserver.blink:linux_trusty_blink_rel
TBR=halcanary@google.com

Review-Url: https://codereview.chromium.org/2668423008
Cr-Commit-Position: refs/heads/master@{#447931}

DEPS

@@ -40,7 +40,7 @@ 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': '1db215a8efb444b62194a945b3d634463f994a06',
+  'skia_revision': '3f36369a94d2c49c91bcd0249bf351da36a6d40d',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling V8
   # and whatever else without interference from each other.