Roll src/third_party/skia/ 48898561d..4c42eebc5 (1 commit).

https://chromium.googlesource.com/skia.git/+log/48898561db7d..4c42eebc5551

$ git log 48898561d..4c42eebc5 --date=short --no-merges --format='%ad %ae %s'
2016-07-10 update-skps Update SKP version

CQ_INCLUDE_TRYBOTS=master.tryserver.blink:linux_blink_rel
TBR=msarett@google.com

Review-Url: https://codereview.chromium.org/2136843002
Cr-Commit-Position: refs/heads/master@{#404583}

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': '48898561db7d50b6d1e0d2048c0a472f9a1d6a28',
+  'skia_revision': '4c42eebc55518019e6c2437e59adba28297221df',
   # Three lines of non-changing comments so that
   # the commit queue can handle CLs rolling V8
   # and whatever else without interference from each other.