Build libaddressinput in Chrome for requestAutocomplete().

third_party/libaddressinput/chromium/util/json.cc

+// 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.
+
+#include "base/json/json_reader.h"
+#include "base/logging.h"
+#include "util/json.h"

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

1) Place the header that you're implementing at the top of the file and separate
from the rest of of the headers.
http://google-styleguide.googlecode.com/svn/trunk/cppguide.xml#Names_and_Orde...

2) Include-what-you-use for std::string, scoped_ptr, base::Value.

After these suggestions, the includes should look like this:

#include "util/json.h"

#include <string>

#include "base/json/json_reader.h"
#include "base/logging.h"
#include "base/memory/scoped_ptr.h"
#include "base/values.h"

[Dan Beam, 2013/11/20 00:53:48]

Done, however we don't (in Chrome code) re-include the same headers included in
the interface.  For example, scoped_ptr.h and values.h are included in
util/json.h so they're not re-included here.

+
+namespace i18n {
+namespace addressinput {
+
+Json::Json() {}
+Json::~Json() {}
+
+bool Json::ParseObject(const std::string& json) {
+  dict_.reset();
+
+  // |json| is converted to a |c_str()| here because rapidjson and other parts
+  // of the standalone library use char* rather than std::string.
+  scoped_ptr<base::Value> parsed(base::JSONReader::Read(json.c_str()));
+  if (parsed && parsed->IsType(base::Value::TYPE_DICTIONARY))
+    dict_.reset(static_cast<base::DictionaryValue*>(parsed.release()));
+
+  return !!dict_;
+}
+
+bool Json::HasStringValueForKey(const std::string& key) const {
+  const base::Value* val = NULL;
+
+  if (dict_)
+    dict_->GetWithoutPathExpansion(key, &val);
+  else
+    NOTREACHED();
+
+  return val && val->IsType(base::Value::TYPE_STRING);
+}
+
+std::string Json::GetStringValueForKey(const std::string& key) const {
+  std::string result;
+
+  if (dict_)
+    dict_->GetStringWithoutPathExpansion(key, &result);
+  else
+    NOTREACHED();
+
+  return result;
+}
+
+}  // namespace addressinput
+}  // namespace i18n