ChromeOS cryptohome should be able to use gaia id as user identifier.

chrome/browser/policy/cloud/cloud_policy_browsertest.cc

 // Copyright (c) 2012 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/callback.h"
 #include "base/command_line.h"
 #include "base/files/file_path.h"
 #include "base/files/file_util.h"
 #include "base/files/scoped_temp_dir.h"
 #include "base/memory/scoped_ptr.h"
@@ skipping 36 matching lines @@
 #include "policy/proto/cloud_policy.pb.h"
 #include "policy/proto/device_management_backend.pb.h"
 #include "testing/gmock/include/gmock/gmock.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "url/gurl.h"
 
 #if defined(OS_CHROMEOS)
 #include "chrome/browser/chromeos/policy/user_cloud_policy_manager_chromeos.h"
 #include "chrome/browser/chromeos/policy/user_cloud_policy_manager_factory_chromeos.h"
 #include "chromeos/chromeos_paths.h"
+#include "chromeos/cryptohome/cryptohome_parameters.h"
 #include "chromeos/dbus/cryptohome_client.h"
 #include "chromeos/login/user_names.h"
+#include "components/signin/core/account_id/account_id.h"
 #else
 #include "chrome/browser/policy/cloud/user_cloud_policy_manager_factory.h"
 #include "chrome/browser/signin/signin_manager_factory.h"
 #include "components/policy/core/common/cloud/user_cloud_policy_manager.h"
 #include "components/signin/core/browser/signin_manager.h"
 #endif
 
 using testing::AnyNumber;
 using testing::InvokeWithoutArgs;
 using testing::Mock;
@@ skipping 258 matching lines @@
     Mock::VerifyAndClearExpectations(&observer);
     policy_manager->core()->client()->RemoveObserver(&observer);
     EXPECT_TRUE(policy_manager->core()->client()->is_registered());
 
 #if defined(OS_CHROMEOS)
     // Get the path to the user policy key file.
     base::FilePath user_policy_key_dir;
     ASSERT_TRUE(
         PathService::Get(chromeos::DIR_USER_POLICY_KEYS, &user_policy_key_dir));
     std::string sanitized_username =
-        chromeos::CryptohomeClient::GetStubSanitizedUsername(GetTestUser());
+        chromeos::CryptohomeClient::GetStubSanitizedUsername(
+            cryptohome::Identification(
+                AccountId::FromUserEmail(GetTestUser())));
     user_policy_key_file_ = user_policy_key_dir.AppendASCII(sanitized_username)
                                                .AppendASCII("policy.pub");
 #endif
   }
 
   PolicyService* GetPolicyService() {
     ProfilePolicyConnector* profile_connector =
         ProfilePolicyConnectorFactory::GetForBrowserContext(
             browser()->profile());
     return profile_connector->policy_service();
@@ skipping 190 matching lines @@
 
   // They should now serialize to the same bytes.
   std::string chrome_settings_serialized;
   std::string cloud_policy_serialized;
   ASSERT_TRUE(chrome_settings.SerializeToString(&chrome_settings_serialized));
   ASSERT_TRUE(cloud_policy.SerializeToString(&cloud_policy_serialized));
   EXPECT_EQ(chrome_settings_serialized, cloud_policy_serialized);
 }
 
 }  // namespace policy