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

chrome/browser/signin/easy_unlock_service_signin_chromeos.h

Index: chrome/browser/signin/easy_unlock_service_signin_chromeos.h
diff --git a/chrome/browser/signin/easy_unlock_service_signin_chromeos.h b/chrome/browser/signin/easy_unlock_service_signin_chromeos.h
index 8dd90f36e7c38f0079fad5ce3db37ead568b173d..9496f893d39619008659a33c777626d4d0d09caf 100644
--- a/chrome/browser/signin/easy_unlock_service_signin_chromeos.h
+++ b/chrome/browser/signin/easy_unlock_service_signin_chromeos.h
@@ -31,17 +31,18 @@ class EasyUnlockServiceSignin
   explicit EasyUnlockServiceSignin(Profile* profile);
   ~EasyUnlockServiceSignin() override;
 
-  // Sets |user_id| as the current user of the service. Note this does
+  // Sets |account_id| as the current user of the service. Note this does
   // not change the focused user on the login screen.
-  void SetCurrentUser(const std::string& user_id);
+  void SetCurrentUser(const AccountId& account_id);
 
-  // Wraps the challenge for the remote device identified by |user_id| and the
+  // Wraps the challenge for the remote device identified by |account_id| and
+  // the
   // |device_public_key|. The |channel_binding_data| is signed by the TPM
   // included in the wrapped challenge.
   // |callback| will be invoked when wrapping is complete. If the user data is
   // not loaded yet, then |callback| will be invoked with an empty string.
   void WrapChallengeForUserAndDevice(
-      const std::string& user_id,
+      const AccountId& account_id,
       const std::string& device_public_key,
       const std::string& channel_binding_data,
       base::Callback<void(const std::string& wraped_challenge)> callback);
@@ -78,7 +79,7 @@ class EasyUnlockServiceSignin
 
   // EasyUnlockService implementation:
   EasyUnlockService::Type GetType() const override;
-  std::string GetUserEmail() const override;
+  AccountId GetAccountId() const override;
   void LaunchSetup() override;
   const base::DictionaryValue* GetPermitAccess() const override;
   void SetPermitAccess(const base::DictionaryValue& permit) override;
@@ -91,9 +92,9 @@ class EasyUnlockServiceSignin
   TurnOffFlowStatus GetTurnOffFlowStatus() const override;
   std::string GetChallenge() const override;
   std::string GetWrappedSecret() const override;
-  void RecordEasySignInOutcome(const std::string& user_id,
+  void RecordEasySignInOutcome(const AccountId& account_id,
                                bool success) const override;
-  void RecordPasswordLoginEvent(const std::string& user_id) const override;
+  void RecordPasswordLoginEvent(const AccountId& account_id) const override;
   void StartAutoPairing(const AutoPairingResultCallback& callback) override;
   void SetAutoPairingResult(bool success, const std::string& error) override;
   void InitializeInternal() override;
@@ -108,7 +109,7 @@ class EasyUnlockServiceSignin
   void OnScreenDidUnlock(
       proximity_auth::ScreenlockBridge::LockHandler::ScreenType screen_type)
       override;
-  void OnFocusedUserChanged(const std::string& user_id) override;
+  void OnFocusedUserChanged(const AccountId& account_id) override;
 
   // chromeos::LoginState::Observer implementation:
   void LoggedInStateChanged() override;
@@ -118,30 +119,29 @@ class EasyUnlockServiceSignin
   void LoadCurrentUserDataIfNeeded();
 
   // Callback invoked when the user's device data is loaded from cryptohome.
-  void OnUserDataLoaded(
-      const std::string& user_id,
-      bool success,
-      const chromeos::EasyUnlockDeviceKeyDataList& data);
+  void OnUserDataLoaded(const AccountId& account_id,
+                        bool success,
+                        const chromeos::EasyUnlockDeviceKeyDataList& data);
 
   // If the device data has been loaded for the current user, returns it.
   // Otherwise, returns NULL.
   const UserData* FindLoadedDataForCurrentUser() const;
 
   // User id of the user currently associated with the service.
-  std::string user_id_;
+  AccountId account_id_;
 
-  // Maps user ids to their fetched cryptohome key data.
-  std::map<std::string, UserData*> user_data_;
+  // Maps account ids to their fetched cryptohome key data.
+  std::map<AccountId, UserData*> user_data_;
 
   // Whether failed attempts to load user data should be retried.
   // This is to handle case where cryptohome daemon is not started in time the
   // service attempts to load some data. Retries will be allowed only until the
   // first data load finishes (even if it fails).
-  bool allow_cryptohome_backoff_;
+  bool allow_cryptohome_backoff_ = true;
 
   // Whether the service has been successfully initialized, and has not been
   // shut down.
-  bool service_active_;
+  bool service_active_ = false;
 
   // The timestamp for the most recent time when a user pod was focused.
   base::TimeTicks user_pod_last_focused_timestamp_;