Revert of Port most uses of SkOnce to SkLazyPtr. (https://codereview.chromium.org/304383005/) Reason for revert: Leaking refs on SkTypeface on Macs. Original issue's description: > Port most uses of SkOnce to SkLazyPtr. > > BUG=skia: > > Committed: http://code.google.com/p/skia/source/detail?r=15006 [email protected], [email protected] [email protected], [email protected] NOTREECHECKS=true NOTRY=true BUG=skia: Author: [email protected] Review URL: https://codereview.chromium.org/304283007 git-svn-id: http://skia.googlecode.com/svn/trunk@15009 2bbb7eff-a529-9590-31e7-b0007b416f81