1 files changed, 87 insertions, 0 deletions
diff --git a/chromium/chrome/browser/signin/chrome_device_id_helper.cc b/chromium/chrome/browser/signin/chrome_device_id_helper.cc
new file mode 100644
index 00000000000..7b28246d24a
--- /dev/null
+++ b/chromium/chrome/browser/signin/chrome_device_id_helper.cc
@@ -0,0 +1,87 @@
+// Copyright 2018 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/signin/chrome_device_id_helper.h"
+
+#include <string>
+
+#include "build/chromeos_buildflags.h"
+#include "chrome/browser/profiles/profile.h"
+#include "components/signin/public/base/device_id_helper.h"
+
+#if BUILDFLAG(IS_CHROMEOS_ASH)
+#include "base/command_line.h"
+#include "base/guid.h"
+#include "base/logging.h"
+#include "chrome/browser/ash/profiles/profile_helper.h"
+#include "components/prefs/pref_service.h"
+#include "components/signin/public/base/signin_pref_names.h"
+#include "components/signin/public/base/signin_switches.h"
+#include "components/user_manager/known_user.h"
+#include "components/user_manager/user_manager.h"
+#endif
+
+std::string GetSigninScopedDeviceIdForProfile(Profile* profile) {
+#if BUILDFLAG(IS_CHROMEOS_ASH)
+  if (base::CommandLine::ForCurrentProcess()->HasSwitch(
+          switches::kDisableSigninScopedDeviceId)) {
+    return std::string();
+  }
+
+  // UserManager may not exist in unit_tests.
+  if (!user_manager::UserManager::IsInitialized())
+    return std::string();
+
+  const user_manager::User* user =
+      chromeos::ProfileHelper::Get()->GetUserByProfile(profile);
+  if (!user)
+    return std::string();
+
+  const std::string signin_scoped_device_id =
+      user_manager::known_user::GetDeviceId(user->GetAccountId());
+  LOG_IF(ERROR, signin_scoped_device_id.empty())
+      << "Device ID is not set for user.";
+  return signin_scoped_device_id;
+#else
+  return signin::GetSigninScopedDeviceId(profile->GetPrefs());
+#endif
+}
+
+#if BUILDFLAG(IS_CHROMEOS_ASH)
+
+std::string GenerateSigninScopedDeviceId(bool for_ephemeral) {
+  constexpr char kEphemeralUserDeviceIDPrefix[] = "t_";
+  std::string guid = base::GenerateGUID();
+  return for_ephemeral ? kEphemeralUserDeviceIDPrefix + guid : guid;
+}
+
+void MigrateSigninScopedDeviceId(Profile* profile) {
+  // UserManager may not exist in unit_tests.
+  if (!user_manager::UserManager::IsInitialized())
+    return;
+
+  const user_manager::User* user =
+      chromeos::ProfileHelper::Get()->GetUserByProfile(profile);
+  if (!user)
+    return;
+  const AccountId account_id = user->GetAccountId();
+  if (user_manager::known_user::GetDeviceId(account_id).empty()) {
+    const std::string legacy_device_id = profile->GetPrefs()->GetString(
+        prefs::kGoogleServicesSigninScopedDeviceId);
+    if (!legacy_device_id.empty()) {
+      // Need to move device ID from the old location to the new one, if it has
+      // not been done yet.
+      user_manager::known_user::SetDeviceId(account_id, legacy_device_id);
+    } else {
+      user_manager::known_user::SetDeviceId(
+          account_id, GenerateSigninScopedDeviceId(
+                          user_manager::UserManager::Get()
+                              ->IsUserNonCryptohomeDataEphemeral(account_id)));
+    }
+  }
+  profile->GetPrefs()->SetString(prefs::kGoogleServicesSigninScopedDeviceId,
+                                 std::string());
+}
+
+#endif