Add getFamilyNames to SkTypeface.

Committed: https://code.google.com/p/skia/source/detail?r=10589

Review URL: https://codereview.chromium.org/21716005

git-svn-id: http://skia.googlecode.com/svn/trunk@10592 2bbb7eff-a529-9590-31e7-b0007b416f81
14 files changed