Ignore unknown attributes when parsing JSON schemas.

components/json_schema/json_schema_validator.h

Index: components/json_schema/json_schema_validator.h
diff --git a/components/json_schema/json_schema_validator.h b/components/json_schema/json_schema_validator.h
index 4584a9da77a5be1bf1b17d5babebc46133b3b913..2fb9d3118a43952a6293f34b6511bb79eabb342a 100644
--- a/components/json_schema/json_schema_validator.h
+++ b/components/json_schema/json_schema_validator.h
@@ -104,8 +104,11 @@ class JSONSchemaValidator {
   // and that DictionaryValue can be used to build a JSONSchemaValidator.
   // Returns the parsed DictionaryValue when |schema| validated, otherwise
   // returns NULL. In that case, |error| contains an error description.
+  // If |ignore_unknown_attributes| is true then unrecognized entries in the
+  // schema will be ignored; otherwise, they'll cause a fatal parsing error.
   static scoped_ptr<base::DictionaryValue> IsValidSchema(
       const std::string& schema,
+      bool ignore_unknown_attributes,

[not at google - send to devlin, 2013/12/06 18:12:26]

pls make this an enum like the JSONWriter has (Options etc)

and consider providing two versions of this method, one with the options
argument and one without; that will clean up a lot of call sites.

[Joao da Silva, 2013/12/08 08:41:20]

Done.

       std::string* error);
 
   // Creates a validator for the specified schema.