Update json_schema_compiler to handle the Automation extension API

tools/json_schema_compiler/js_util.py

Index: tools/json_schema_compiler/js_util.py
diff --git a/tools/json_schema_compiler/js_util.py b/tools/json_schema_compiler/js_util.py
index 2549aefa2fae4966eee2c0f1fe4fef67667b82a7..e563b8889af0bcf03a980cdda55b42f88dfb5d30 100644
--- a/tools/json_schema_compiler/js_util.py
+++ b/tools/json_schema_compiler/js_util.py
@@ -101,6 +101,18 @@ class JsUtil(object):
 
     c.Eblock(' */')
 
+  def AppendTypeJsDoc(self, c, namespace_name, js_type, optional):
+    """Appends the documentation for a type as a Code.
+    """
+    c.Append('@type {')
+    if optional:
+      c.Append('(', new_line=False)
+      c.Concat(self._TypeToJsType(namespace_name, js_type), new_line=False)
+      c.Append('|undefined)', new_line=False)
+    else:
+      c.Concat(self._TypeToJsType(namespace_name, js_type), new_line=False)
+    c.Append('}', new_line=False)
+
   def _FunctionToJsFunction(self, namespace_name, function):
     """Converts a model.Function to a JS type (i.e., function([params])...)"""
     c = Code()