This CL replaces e-mail with AccountId in wallpaper manager code.

chrome/browser/chromeos/login/users/fake_chrome_user_manager.cc

 // 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.
 
 #include "chrome/browser/chromeos/login/users/fake_chrome_user_manager.h"
 
 #include "chrome/browser/chromeos/login/users/chrome_user_manager.h"
 #include "chrome/browser/chromeos/login/users/fake_supervised_user_manager.h"
 #include "chrome/browser/chromeos/login/users/wallpaper/wallpaper_manager.h"
 #include "chrome/browser/chromeos/profiles/profile_helper.h"
@@ skipping 126 matching lines @@
 }
 
 void FakeChromeUserManager::SessionStarted() {
 }
 
 void FakeChromeUserManager::RemoveUser(
     const AccountId& account_id,
     user_manager::RemoveUserDelegate* delegate) {}
 
 void FakeChromeUserManager::RemoveUserFromList(const AccountId& account_id) {
-  WallpaperManager::Get()->RemoveUserWallpaperInfo(account_id.GetUserEmail());
+  WallpaperManager::Get()->RemoveUserWallpaperInfo(account_id);
   FakeUserManager::RemoveUserFromList(account_id);
 }
 
 user_manager::UserList
 FakeChromeUserManager::GetUsersAllowedForSupervisedUsersCreation() const {
   CrosSettings* cros_settings = CrosSettings::Get();
   bool allow_new_user = true;
   cros_settings->GetBoolean(kAccountsPrefAllowNewUser, &allow_new_user);
   bool supervised_users_allowed = AreSupervisedUsersAllowed();
 
@@ skipping 35 matching lines @@
     const base::DictionaryValue** out_value) {
   return false;
 }
 
 void FakeChromeUserManager::UpdateKnownUserPrefs(
     const AccountId& account_id,
     const base::DictionaryValue& values,
     bool clear) {}
 
 }  // namespace chromeos