Removed redundant typedef from GrDebugGL class

Comitted on behalf of Guanqun.Lu@gmail.com

http://codereview.appspot.com/5924049/



git-svn-id: http://skia.googlecode.com/svn/trunk@3513 2bbb7eff-a529-9590-31e7-b0007b416f81
1 file changed