Roll src/third_party/skia/ 121563eb4..85a45d93e (2 commits).

https://chromium.googlesource.com/skia.git/+log/121563eb4a02..85a45d93ed6f

$ git log 121563eb4..85a45d93e --date=short --no-merges --format='%ad %ae %s'
2016-10-04 mtklein more debugging for this test.
2016-10-04 ccameron Mac: Remove use of deprecated font APIs

CQ_INCLUDE_TRYBOTS=master.tryserver.blink:linux_precise_blink_rel
TBR=stephana@google.com

Review-Url: https://codereview.chromium.org/2389373002
Cr-Commit-Position: refs/heads/master@{#423044}

DEPS

@@ -39,7 +39,7 @@ 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': '121563eb4a0203a8b85ea5fe7caedf6fb35f04bf',
+  'skia_revision': '85a45d93ed6f299d09b17ae55c5d74242af4b11c',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling V8
   # and whatever else without interference from each other.