Remove gainFocus() and setMatrixClip() virtuals from SkDevice.

R=reed@google.com,robertphillips@google.com
Review URL: https://codereview.appspot.com/6636050

git-svn-id: http://skia.googlecode.com/svn/trunk@5861 2bbb7eff-a529-9590-31e7-b0007b416f81
7 files changed