Don't render degenerate triangles in 9patches.
Bug #3251983

Change-Id: Ib0b38a7b8111542372f4c4c106b6321c26fe4ad4
diff --git a/libs/hwui/Debug.h b/libs/hwui/Debug.h
index feaba25..ddbfa5e 100644
--- a/libs/hwui/Debug.h
+++ b/libs/hwui/Debug.h
@@ -34,6 +34,9 @@
 
 // Turn on to display debug infor about 9patch objects
 #define DEBUG_PATCHES 0
+// Turn on to display vertex and tex coords data about 9patch objects
+// This flag requires DEBUG_PATCHES to be turned on
+#define DEBUG_PATCHES_VERTICES 0
 
 // Turn on to display debug info about paths
 #define DEBUG_PATHS 0