Use same vk non-overscroll solution for both login and lock screens

chrome/browser/chromeos/login/helper.cc

 // Copyright (c) 2012 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/helper.h"
 
 #include "ash/shell.h"
 #include "base/command_line.h"
 #include "base/strings/utf_string_conversions.h"
 #include "chrome/browser/chromeos/login/users/user_manager.h"
@@ skipping 33 matching lines @@
 }
 
 namespace login {
 
 std::string CanonicalizeUserID(const std::string& user_id) {
   if (user_id == UserManager::kGuestUserName)
     return user_id;
   return gaia::CanonicalizeEmail(user_id);
 }
 
-bool LockScrollIntoViewEnabled() {
-  return !CommandLine::ForCurrentProcess()->HasSwitch(
-      chromeos::switches::kDisableLockScrollIntoView);
-}
-
 bool LoginScrollIntoViewEnabled() {
   return !CommandLine::ForCurrentProcess()->HasSwitch(
       chromeos::switches::kDisableLoginScrollIntoView);
 }
 
 NetworkStateHelper::NetworkStateHelper() {}
 NetworkStateHelper::~NetworkStateHelper() {}
 
 base::string16 NetworkStateHelper::GetCurrentNetworkName() const {
   NetworkStateHandler* nsh = NetworkHandler::Get()->network_state_handler();
@@ skipping 24 matching lines @@
 bool NetworkStateHelper::IsConnecting() const {
   chromeos::NetworkStateHandler* nsh =
       chromeos::NetworkHandler::Get()->network_state_handler();
   return nsh->ConnectingNetworkByType(
       chromeos::NetworkTypePattern::Default()) != NULL;
 }
 
 }  // namespace login
 
 }  // namespace chromeos