Add name of the enum to message to help looking up.

chromeos/login/auth/cryptohome_authenticator.cc

Index: chromeos/login/auth/cryptohome_authenticator.cc
diff --git a/chromeos/login/auth/cryptohome_authenticator.cc b/chromeos/login/auth/cryptohome_authenticator.cc
index 52146282c48460a6c0307f7659e972f92325344e..f43aafc9521f933202b3be6cdb2672b71849f65e 100644
--- a/chromeos/login/auth/cryptohome_authenticator.cc
+++ b/chromeos/login/auth/cryptohome_authenticator.cc
@@ -907,8 +907,9 @@ CryptohomeAuthenticator::AuthState CryptohomeAuthenticator::ResolveState() {
   } else {
     state = ResolveCryptohomeFailureState();
     LOGIN_LOG(ERROR) << "Cryptohome failure: "
-                     << "state=" << state
-                     << ", code=" << current_state_->cryptohome_code();
+                     << "state(AuthState)=" << state
+                     << ", code(cryptohome::MountError)="
+                     << current_state_->cryptohome_code();
   }
 
   DCHECK(current_state_->cryptohome_complete());  // Ensure invariant holds.