Remove dependency on ui::ScaleFactor from ui/gfx

ash/launcher/launcher_item_delegate_manager.cc

 // Copyright 2013 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 "ash/launcher/launcher_item_delegate_manager.h"
 
+#include "base/logging.h"
+
 namespace ash {
 
 LauncherItemDelegateManager::LauncherItemDelegateManager() {
 }
 
 LauncherItemDelegateManager::~LauncherItemDelegateManager() {
 }
 
 void LauncherItemDelegateManager::RegisterLauncherItemDelegate(
     ash::LauncherItemType type, LauncherItemDelegate* item_delegate) {
   // When a new |item_delegate| is registered with an exsiting |type|, it will
   // get overwritten.
   item_type_to_item_delegate_map_[type] = item_delegate;
 }
 
 LauncherItemDelegate* LauncherItemDelegateManager::GetLauncherItemDelegate(
     ash::LauncherItemType item_type) {
   DCHECK(item_type_to_item_delegate_map_.find(item_type) !=
       item_type_to_item_delegate_map_.end());
   return item_type_to_item_delegate_map_[item_type];
 }
 
 }  // namespace ash