Build libaddressinput in Chrome for requestAutocomplete().

third_party/libaddressinput/chromium/util/json.h

+// Copyright 2013 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef THIRD_PARTY_LIBADDRESSINPUT_CHROMIUM_UTIL_JSON_H_
+#define THIRD_PARTY_LIBADDRESSINPUT_CHROMIUM_UTIL_JSON_H_
+
+#include "base/basictypes.h"
+#include "base/memory/scoped_ptr.h"
+#include "base/values.h"
+
+namespace i18n {
+namespace addressinput {
+
+// This class provides the same interface as ../src/cpp/src/util/json.h but with

[please use gerrit instead, 2013/11/20 00:03:10]

Move this comment at the top of the file:

// Copyright 2013 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
//
// This class provides the same interface as ../src/cpp/src/util/json.h but with
// a Chromium-specific JSON parser. This is because it didn't make much sense to
// have 2 JSON parsers in Chrome's code base, and the standalone library opted
// to use rapidjson instead of jsoncpp. See the other file for an explanation of
// what this class does.

#ifndef THIRD_PARTY_LIBADDRESSINPUT_CHROMIUM_UTIL_JSON_H_
...

+// a Chromium-specific JSON parser. This is because it didn't make much sense to
+// have 2 JSON parsers in Chrome's code base, and the standalone library opted
+// to use rapidjson instead of jsoncpp. See the other file for an explanation of
+// what this class does.
+
+class Json {
+ public:
+  Json();
+  ~Json();
+
+  bool ParseObject(const std::string& json);

[please use gerrit instead, 2013/11/20 00:03:10]

Include-what-you-use specifies that you should #include <string> if you have it
here. It should go before the Chrome includes and be separate from them.

+  bool HasStringValueForKey(const std::string& key) const;
+  std::string GetStringValueForKey(const std::string& key) const;
+
+ private:
+  scoped_ptr<base::DictionaryValue> dict_;

[please use gerrit instead, 2013/11/20 00:03:10]

You can forward-declare this and avoid including "base/values.h". After these
suggestions, the include section might look like this:

#include <string>

#include "base/basictypes.h"
#include "base/memory/scoped_ptr.h"

namespace base {
class DictionaryValue;
}

+
+  DISALLOW_COPY_AND_ASSIGN(Json);
+};
+
+}  // namespace addressinput
+}  // namespace i18n
+
+#endif  // THIRD_PARTY_LIBADDRESSINPUT_CHROMIUM_UTIL_JSON_H_