[Cleanup] Const-correct the profile() method for the EasyUnlockService

chrome/browser/signin/easy_unlock_service_regular.cc

 // 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.
 
 #include "chrome/browser/signin/easy_unlock_service_regular.h"
 
 #include "base/bind.h"
 #include "base/logging.h"
 #include "base/prefs/pref_service.h"
 #include "base/prefs/scoped_user_pref_update.h"
@@ skipping 284 matching lines @@
 bool EasyUnlockServiceRegular::IsAllowedInternal() const {
 #if defined(OS_CHROMEOS)
   if (!user_manager::UserManager::Get()->IsLoggedInAsUserWithGaiaAccount())
     return false;
 
   // TODO(tengs): Ephemeral accounts generate a new enrollment every time they
   // are added, so disable Smart Lock to reduce enrollments on server. However,
   // ephemeral accounts can be locked, so we should revisit this use case.
   // TODO(tengs): Remove this special case and test this code path after test
   // refactoring is landed (crbug.com/414829).
-  user_manager::User* user =
+  const user_manager::User* user =
       chromeos::ProfileHelper::Get()->GetUserByProfile(profile());
   user_manager::UserManager* user_manager = user_manager::UserManager::Get();
   if (user->email() != chromeos::login::kStubUser &&
       user_manager->IsCurrentUserNonCryptohomeDataEphemeral())
     return false;
 
   if (!chromeos::ProfileHelper::IsPrimaryProfile(profile()))
     return false;
 
   if (!profile()->GetPrefs()->GetBoolean(prefs::kEasyUnlockAllowed))
@@ skipping 77 matching lines @@
       new base::DictionaryValue());
   user_prefs_dict->SetBooleanWithoutPathExpansion(
       prefs::kEasyUnlockProximityRequired,
       profile_prefs->GetBoolean(prefs::kEasyUnlockProximityRequired));
 
   DictionaryPrefUpdate update(local_state,
                               prefs::kEasyUnlockLocalStateUserPrefs);
   std::string user_email = GetUserEmail();
   update->SetWithoutPathExpansion(user_email, user_prefs_dict.Pass());
 }