opengl: Add GLES31 and GLES31Ext class templates

Bug: 15028495
Change-Id: I276d04f029d441e092428fad72f09ca15e1d233a
diff --git a/opengl/tools/glgen/src/GenerateGLES.java b/opengl/tools/glgen/src/GenerateGLES.java
index c99c45d..5693ef3 100644
--- a/opengl/tools/glgen/src/GenerateGLES.java
+++ b/opengl/tools/glgen/src/GenerateGLES.java
@@ -84,7 +84,8 @@
 
         // Generate files
         for(String suffix: new String[] {"GLES10", "GLES10Ext",
-                "GLES11", "GLES11Ext", "GLES20", "GLES30"})
+                "GLES11", "GLES11Ext", "GLES20",
+                "GLES30", "GLES31", "GLES31Ext"})
         {
             BufferedReader spec11Reader =
                 new BufferedReader(new FileReader("specs/gles11/"