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

components/proximity_auth/unlock_manager.h

 // Copyright 2015 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 COMPONENTS_PROXIMITY_AUTH_UNLOCK_MANAGER_H
 #define COMPONENTS_PROXIMITY_AUTH_UNLOCK_MANAGER_H
 
 #include "base/macros.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/weak_ptr.h"
@@ skipping 67 matching lines @@
   void OnRemoteStatusUpdate(const RemoteStatusUpdate& status_update) override;
   void OnDecryptResponse(const std::string& decrypted_bytes) override;
   void OnUnlockResponse(bool success) override;
   void OnDisconnected() override;
 
   // ScreenlockBridge::Observer
   void OnScreenDidLock(
       ScreenlockBridge::LockHandler::ScreenType screen_type) override;
   void OnScreenDidUnlock(
       ScreenlockBridge::LockHandler::ScreenType screen_type) override;
-  void OnFocusedUserChanged(const std::string& user_id) override;
+  void OnFocusedUserChanged(const AccountId& account_id) override;
 
   // Called when the screenlock state changes.
   void OnScreenLockedOrUnlocked(bool is_locked);
 
   // Called when the Bluetooth adapter is initialized.
   void OnBluetoothAdapterInitialized(
       scoped_refptr<device::BluetoothAdapter> adapter);
 
   // device::BluetoothAdapter::Observer:
   void AdapterPresentChanged(device::BluetoothAdapter* adapter,
@@ skipping 90 matching lines @@
 
   // Used to vend all other weak pointers.
   base::WeakPtrFactory<UnlockManager> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(UnlockManager);
 };
 
 }  // namespace proximity_auth
 
 #endif  // COMPONENTS_PROXIMITY_AUTH_UNLOCK_MANAGER_H