This CL replaces e-mail with AccountId in easy signin code.

chrome/browser/chromeos/login/easy_unlock/easy_unlock_user_login_flow.cc

Index: chrome/browser/chromeos/login/easy_unlock/easy_unlock_user_login_flow.cc
diff --git a/chrome/browser/chromeos/login/easy_unlock/easy_unlock_user_login_flow.cc b/chrome/browser/chromeos/login/easy_unlock/easy_unlock_user_login_flow.cc
index 6dec53e6b718fa58422b6176c277c548d7711652..2ba28ad9ef41969600bb77223a568c123e5e64ba 100644
--- a/chrome/browser/chromeos/login/easy_unlock/easy_unlock_user_login_flow.cc
+++ b/chrome/browser/chromeos/login/easy_unlock/easy_unlock_user_login_flow.cc
@@ -7,9 +7,8 @@
 #include "chrome/browser/chromeos/profiles/profile_helper.h"
 #include "chrome/browser/signin/easy_unlock_service.h"
 
-EasyUnlockUserLoginFlow::EasyUnlockUserLoginFlow(const std::string& user_id)
-    : chromeos::ExtendedUserFlow(user_id) {
-}
+EasyUnlockUserLoginFlow::EasyUnlockUserLoginFlow(const AccountId& account_id)
+    : chromeos::ExtendedUserFlow(account_id) {}
 
 EasyUnlockUserLoginFlow::~EasyUnlockUserLoginFlow() {}
 
@@ -31,8 +30,8 @@ bool EasyUnlockUserLoginFlow::HandleLoginFailure(
   EasyUnlockService* service = EasyUnlockService::Get(profile);
   if (!service)
     return false;
-  service->HandleAuthFailure(user_id());
-  service->RecordEasySignInOutcome(user_id(), false);
+  service->HandleAuthFailure(account_id());
+  service->RecordEasySignInOutcome(account_id(), false);
   UnregisterFlowSoon();
   return true;
 }
@@ -43,7 +42,7 @@ void EasyUnlockUserLoginFlow::HandleLoginSuccess(
   EasyUnlockService* service = EasyUnlockService::Get(profile);
   if (!service)
     return;
-  service->RecordEasySignInOutcome(user_id(), true);
+  service->RecordEasySignInOutcome(account_id(), true);
 }
 
 bool EasyUnlockUserLoginFlow::HandlePasswordChangeDetected() {