Roll src/third_party/skia/ 8d80bb5f2..e4ca36225 (1 commit).

https://skia.googlesource.com/skia.git/+log/8d80bb5f20d8..e4ca362259a3

$ git log 8d80bb5f2..e4ca36225 --date=short --no-merges --format='%ad %ae %s'
2017-01-11 reed add win subclass of raster-allocator

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=kjlubick@google.com

Review-Url: https://codereview.chromium.org/2625933005
Cr-Commit-Position: refs/heads/master@{#443160}

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': '8d80bb5f20d899fb7da58b0be0c1218db420891a',
+  'skia_revision': 'e4ca362259a36458cce94a5e643a11306037e8d6',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling V8
   # and whatever else without interference from each other.