Roll src/third_party/skia/ b048e81c5..55360b11c (1 commit).

https://skia.googlesource.com/skia.git/+log/b048e81c5c27..55360b11c7da

$ git log b048e81c5..55360b11c --date=short --no-merges --format='%ad %ae %s'
2016-12-05 robertphillips Revert "Remove use of makeDeferredRenderTargetContextWithFallback"

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=herb@google.com

Review-Url: https://codereview.chromium.org/2546403002
Cr-Commit-Position: refs/heads/master@{#436325}

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': 'b048e81c5c27fe6c6134eaf9ab96594e2eee0d1d',
+  'skia_revision': '55360b11c7da3b19e0c5ae1aa5a7a457cb5e373a',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling V8
   # and whatever else without interference from each other.