Google OAuth Device Flow support for FNL

services/authentication/auth_data.cc

+// Copyright 2015 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 "services/authentication/auth_data.h"
+
+#include <vector>
+
+#include "base/logging.h"
+#include "base/strings/string_split.h"
+
+namespace authentication {
+
+const char kAuthDataSeparator = ',';

[qsr, 2016/02/16 14:17:06]

Why is it safe? Do we have guarantees that it will never be used in any of the
data you need in this class?

[ukode, 2016/02/26 21:35:50]

Got rid of this completely. Instead using a mojom struct. 

+
+AuthData::AuthData() = default;
+
+AuthData::~AuthData() = default;
+
+// Serializes auth data as a string with auth components delimited by ",".
+std::string GetAuthDataAsString(const AuthData& auth_data) {
+  std::string str;
+
+  str += auth_data.username;
+  str += kAuthDataSeparator + auth_data.auth_provider;
+  str += kAuthDataSeparator + auth_data.persistent_credential_type;
+  str += kAuthDataSeparator + auth_data.persistent_credential;
+  str += kAuthDataSeparator + auth_data.scopes;
+
+  return str;
+}
+
+// Deserializes auth data from an input string with the following pattern:
+// "test@gmail.com,Google,RT,1/2345abcedef,profile email"
+AuthData* GetAuthDataFromString(const std::string& auth_str) {
+  if (auth_str.empty()) {
+    return nullptr;
+  }
+
+  std::vector<std::string> auth_components;
+  base::SplitString(auth_str, kAuthDataSeparator, &auth_components);
+  if (auth_components.size() != 5) {
+    LOG(WARNING) << "Unexpected response: " + auth_str;
+    return nullptr;
+  }
+
+  AuthData* auth_data = new AuthData();
+  auth_data->username = auth_components[0];
+  auth_data->auth_provider = auth_components[1];
+  auth_data->persistent_credential_type = auth_components[2];
+  auth_data->persistent_credential = auth_components[3];
+  auth_data->scopes = auth_components[4];
+
+  return auth_data;
+}
+
+}  // authentication namespace