Remove redundant defines of GR_GL macros.

Patch submitted by weiwei.li@intel.com

Review URL: http://codereview.appspot.com/4290060/



git-svn-id: http://skia.googlecode.com/svn/trunk@977 2bbb7eff-a529-9590-31e7-b0007b416f81
1 file changed