Move app list from ash to ui.

ash/app_list/pagination_model.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 "ash/app_list/pagination_model.h"
-
-#include "ash/app_list/pagination_model_observer.h"
-
-namespace ash {
-
-PaginationModel::PaginationModel()
-    : total_pages_(-1),
-      selected_page_(-1) {
-}
-
-PaginationModel::~PaginationModel() {
-}
-
-void PaginationModel::SetTotalPages(int total_pages) {
-  if (total_pages == total_pages_)
-    return;
-
-  total_pages_ = total_pages;
-  FOR_EACH_OBSERVER(PaginationModelObserver,
-                    observers_,
-                    TotalPagesChanged());
-}
-
-void PaginationModel::SelectPage(int page) {
-  DCHECK(page >= 0 && page < total_pages_);
-
-  if (page == selected_page_)
-    return;
-
-  int old_selected = selected_page_;
-  selected_page_ = page;
-  FOR_EACH_OBSERVER(PaginationModelObserver,
-                    observers_,
-                    SelectedPageChanged(old_selected, selected_page_));
-}
-
-void PaginationModel::AddObserver(PaginationModelObserver* observer) {
-  observers_.AddObserver(observer);
-}
-
-void PaginationModel::RemoveObserver(PaginationModelObserver* observer) {
-  observers_.RemoveObserver(observer);
-}
-
-}  // namespace ash