Update json_schema_compiler to handle the Automation extension API

tools/json_schema_compiler/model.py

Index: tools/json_schema_compiler/model.py
diff --git a/tools/json_schema_compiler/model.py b/tools/json_schema_compiler/model.py
index e0147b5b4889fb2a86b59a74648a4deb24316051..ba858130fdeb1d22fd0999ae45d893006d631e1b 100644
--- a/tools/json_schema_compiler/model.py
+++ b/tools/json_schema_compiler/model.py
@@ -317,8 +317,10 @@ class Function(object):
     self.filters = [GeneratePropertyFromParam(filter_instance)
                     for filter_instance in json.get('filters', [])]
     callback_param = None
-    for param in json.get('parameters', []):
-      if param.get('type') == 'function':
+    params = json.get('parameters', [])
+    for i in range(len(params)):

[Dan Beam, 2017/01/04 03:19:49]

params = json.get('parameters', [])
for i, param in enumerate(params):

+      param = params[i]
+      if param.get('type') == 'function' and i == len(params) - 1:
         if callback_param:
           # No ParseException because the webstore has this.
           # Instead, pretend all intermediate callbacks are properties.