Roll src/third_party/skia 3d23fc123c37..dc49b0ca9816 (1 commits) (flutter#16189)

https://skia.googlesource.com/skia.git/+log/3d23fc123c37..dc49b0ca9816

git log 3d23fc123c37..dc49b0ca9816 --date=short --first-parent --format='%ad %ae %s'
2020-01-29 kjlubick@google.com [canvaskit] Fix support for fonts with CFF

Created with:
  gclient setdep -r src/third_party/skia@dc49b0ca9816

If this roll has caused a breakage, revert this CL and stop the roller
using the controls here:
https://autoroll.skia.org/r/skia-flutter-autoroll
Please CC reed@google.com on the revert to ensure that a human
is aware of the problem.

To report a problem with the AutoRoller itself, please file a bug:
https://bugs.chromium.org/p/skia/issues/entry?template=Autoroller+Bug

Documentation for the AutoRoller is here:
https://skia.googlesource.com/buildbot/+/master/autoroll/README.md

Bug: None
Tbr: reed@google.com

Author: skia-flutter-autoroll

DEPS

@@ -26,7 +26,7 @@ vars = {
   'skia_git': 'https://skia.googlesource.com',
   # OCMock is for testing only so there is no google clone
   'ocmock_git': 'https://github.com/erikdoe/ocmock.git',
-  'skia_revision': '3d23fc123c3783d30fa97c2b86a5d658a82a85bb',
+  'skia_revision': 'dc49b0ca9816207335bbe3f9c01989dfb3e5543d',
 
   # When updating the Dart revision, ensure that all entries that are
   # dependencies of Dart are also updated to match the entries in the