getDeviceCapabilities is no longer need, so remove it

BUG=skia:
R=bungeman@google.com, vandebo@chromium.org

Author: reed@google.com

Review URL: https://codereview.chromium.org/198943003

git-svn-id: http://skia.googlecode.com/svn/trunk@13797 2bbb7eff-a529-9590-31e7-b0007b416f81
11 files changed