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

chromeos/attestation/mock_attestation_flow.cc

Index: chromeos/attestation/mock_attestation_flow.cc
diff --git a/chromeos/attestation/mock_attestation_flow.cc b/chromeos/attestation/mock_attestation_flow.cc
index 4b109755903a22b2b7c713e0e0c963efda1227df..72be8285543a4fa9e1e52b65df8d2e268469e5c7 100644
--- a/chromeos/attestation/mock_attestation_flow.cc
+++ b/chromeos/attestation/mock_attestation_flow.cc
@@ -5,6 +5,7 @@
 #include "chromeos/attestation/mock_attestation_flow.h"
 
 #include "base/memory/scoped_ptr.h"
+#include "components/signin/core/account_id/account_id.h"

[xiyuan, 2016/02/17 23:14:25]

not used?

[Alexander Alekseev, 2016/02/18 13:45:14]

Done.

 
 using testing::_;
 using testing::DefaultValue;