Roll src/third_party/skia/ 4cea3b9e9..85c922ace (4 commits).

https://chromium.googlesource.com/skia.git/+log/4cea3b9e9d98..85c922acec37

$ git log 4cea3b9e9..85c922ace --date=short --no-merges --format='%ad %ae %s'
2016-09-08 msarett Revert of Checking for valid colorType, alphaType, colorSpace in SkCodec (patchset #2 id:100001 of https://codereview.chromium.org/2319293003/ )
2016-09-08 msarett Checking for valid colorType, alphaType, colorSpace in SkCodec
2016-09-08 brianosman Cache the inverse matrix on SkColorSpace. Rename xyz() to toXYZ().
2016-09-08 mtklein GN: add a helper script for running Android builds

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

Review-Url: https://codereview.chromium.org/2328543003
Cr-Commit-Position: refs/heads/master@{#417367}

DEPS

@@ -36,7 +36,7 @@ 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': '4cea3b9e9d9836c926a8feb55d050993d40b4b5e',
+  'skia_revision': '85c922acec37726ac64e9be9a79de697c677f35d',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling V8
   # and whatever else without interference from each other.