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

chrome/browser/chromeos/login/supervised/supervised_user_login_flow.h

 // Copyright 2014 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.
 
 #ifndef CHROME_BROWSER_CHROMEOS_LOGIN_SUPERVISED_SUPERVISED_USER_LOGIN_FLOW_H_
 #define CHROME_BROWSER_CHROMEOS_LOGIN_SUPERVISED_SUPERVISED_USER_LOGIN_FLOW_H_
 
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
 #include "base/memory/weak_ptr.h"
 #include "base/strings/string16.h"
 #include "chrome/browser/chromeos/login/user_flow.h"
 #include "chromeos/login/auth/extended_authenticator.h"
 #include "chromeos/login/auth/user_context.h"
 
 namespace chromeos {
 
 // UserFlow implementation for signing in supervised user.
 class SupervisedUserLoginFlow
     : public ExtendedUserFlow,
       public ExtendedAuthenticator::NewAuthStatusConsumer {
  public:
-  explicit SupervisedUserLoginFlow(const std::string& user_id);
+  explicit SupervisedUserLoginFlow(const AccountId& account_id);
   ~SupervisedUserLoginFlow() override;
 
   // ExtendedUserFlow overrides.
   void AppendAdditionalCommandLineSwitches() override;
   bool CanLockScreen() override;
   bool ShouldLaunchBrowser() override;
   bool ShouldSkipPostLoginScreens() override;
   bool SupportsEarlyRestartToApplyFlags() override;
   bool HandleLoginFailure(const AuthFailure& failure) override;
   void HandleLoginSuccess(const UserContext& context) override;
@@ skipping 10 matching lines @@
   void OnSyncSetupDataLoaded(const std::string& token);
   void ConfigureSync(const std::string& token);
   void OnPasswordChangeDataLoaded(const base::DictionaryValue* password_data);
   void OnPasswordChangeDataLoadFailed();
   void OnNewKeyAdded(scoped_ptr<base::DictionaryValue> password_data);
   void OnOldKeyRemoved();
   void OnPasswordUpdated(scoped_ptr<base::DictionaryValue> password_data);
 
   scoped_refptr<ExtendedAuthenticator> authenticator_;
 
-  bool data_loaded_;
+  bool data_loaded_ = false;
   UserContext context_;
-  Profile* profile_;
+  Profile* profile_ = nullptr;
   base::WeakPtrFactory<SupervisedUserLoginFlow> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(SupervisedUserLoginFlow);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_CHROMEOS_LOGIN_SUPERVISED_SUPERVISED_USER_LOGIN_FLOW_H_