Refactor OAuth2TokenService to have profile- and device-based implementations.

chrome/browser/chromeos/settings/device_oauth2_token_service.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 "chrome/browser/chromeos/settings/device_oauth2_token_service.h"
+
+#include "base/bind.h"
+#include "base/message_loop.h"
+#include "base/prefs/pref_registry_simple.h"
+#include "base/prefs/pref_service.h"
+#include "base/time.h"
+#include "chrome/browser/browser_process.h"
+#include "chrome/browser/chromeos/cros/cert_library.h"
+#include "content/public/browser/browser_thread.h"
+#include "google_apis/gaia/google_service_auth_error.h"
+
+namespace {
+const char kRobotAnyApiRefreshTokenPrefKey[] = "robot_refresh_token.any-api";
+}
+
+namespace chromeos {
+
+DeviceOAuth2TokenService::DeviceOAuth2TokenService(
+    net::URLRequestContextGetter* getter)
+    : OAuth2TokenService(NULL) {
+}
+
+DeviceOAuth2TokenService::~DeviceOAuth2TokenService() {
+}
+
+// static
+void DeviceOAuth2TokenService::RegisterPrefs(PrefRegistrySimple* registry) {
+  registry->RegisterStringPref(kRobotAnyApiRefreshTokenPrefKey, "");
+}
+
+void DeviceOAuth2TokenService::SaveRefreshToken(
+    const std::string& refresh_token) {
+  // TODO: Encrypt this value when 12870010 is landed.
+  // CrosLibrary::Get()->GetCertLibrary()->EncryptWithSystemSalt(token);
+
+  g_browser_process->local_state()->SetString(kRobotAnyApiRefreshTokenPrefKey,

[Andrew T Wilson (Slow), 2013/03/19 19:58:44]

Consider injecting the PrefRegistry in the constructor instead of hard-coding
local_state().

+                                              refresh_token);
+
+  g_browser_process->local_state()->CommitPendingWrite();
+}
+
+std::string DeviceOAuth2TokenService::GetRefreshToken() {
+  // TODO: Decrypt this value when 12870010 is landed.
+  // CrosLibrary::Get()->GetCertLibrary()->DecryptWithSystemSalt(token);
+
+  return g_browser_process->local_state()->GetString(
+      kRobotAnyApiRefreshTokenPrefKey);
+}
+
+}  // namespace chromeos