Platform/Engine -> Backend
createPlatform -> wrapBackend

R=robertphillips@google.com
Review URL: https://codereview.appspot.com/6785044

git-svn-id: http://skia.googlecode.com/svn/trunk@6123 2bbb7eff-a529-9590-31e7-b0007b416f81
15 files changed