Remove border from GrAtlas entries, and associated copy.

BUG=skia:2178
R=bsalomon@google.com

Author: jvanverth@google.com

Review URL: https://codereview.chromium.org/166483005

git-svn-id: http://skia.googlecode.com/svn/trunk@13458 2bbb7eff-a529-9590-31e7-b0007b416f81
1 file changed