[rac] Download country code data in a single HTTP request.

third_party/libaddressinput/chromium/cpp/src/util/json.h

 // Copyright (C) 2013 Google Inc.
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.
 // You may obtain a copy of the License at
 //
 // http://www.apache.org/licenses/LICENSE-2.0
 //
 // Unless required by applicable law or agreed to in writing, software
 // distributed under the License is distributed on an "AS IS" BASIS,
@@ skipping 22 matching lines @@
  public:
   virtual ~Json();
 
   // Returns a new instance of |Json| object.
   static scoped_ptr<Json> Build();
 
   // Parses the |json| string and returns true if |json| is valid and it is an
   // object.
   virtual bool ParseObject(const std::string& json) = 0;
 
-  // Sets |value| to the string for |key| if it exists, or false if the key
-  // doesn't exist or doesn't correspond to a string. The JSON object must be
-  // parsed successfully in ParseObject() before invoking this method.
+  // Sets |value| to the string for |key| if it exists and has a string value.
+  // Returns false if the key doesn't exist or doesn't correspond to a string.
+  // The JSON object must be parsed successfully in ParseObject() before
+  // invoking this method.
   virtual bool GetStringValueForKey(const std::string& key,
                                     std::string* value) const = 0;
 
+  // Sets |value| to the dictionary for |key| if it exists and has a dictionary
+  // value. Returns false if the key doesn't exist or doesn't correspond to a
+  // dictionary. The JSON object must be parsed successfully in ParseObject()
+  // before invoking this method.
+  virtual bool GetJsonValueForKey(const std::string& key,
+                                  scoped_ptr<Json>* value) const = 0;
+
  protected:
   Json();
 };
 
 }  // namespace addressinput
 }  // namespace i18n
 
 #endif  // I18N_ADDRESSINPUT_UTIL_JSON_H_