[GPU] Allow kMulRGBByAlpha_InConfigFlag and kSwapRAndB_InConfigFlag to both be set

Review URL: http://codereview.appspot.com/5433049/



git-svn-id: http://skia.googlecode.com/svn/trunk@2733 2bbb7eff-a529-9590-31e7-b0007b416f81
1 file changed