add ability to skip 565 test in gm (until I can fix an assert in debug build)



git-svn-id: http://skia.googlecode.com/svn/trunk@5879 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/gm/gm.h b/gm/gm.h
index d3c2f4b..453f104 100644
--- a/gm/gm.h
+++ b/gm/gm.h
@@ -34,6 +34,7 @@
             kSkipPicture_Flag   = 1 << 1,
             kSkipPipe_Flag      = 1 << 2,
             kSkipTiled_Flag     = 1 << 3,
+            kSkip565_Flag       = 1 << 4,
         };
 
         void draw(SkCanvas*);