[Aura] Implement views-based applist.

ui/aura_shell/app_list/app_list_item_model.cc

+// Copyright (c) 2011 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 "ui/aura_shell/app_list/app_list_item_model.h"
+
+#include "ui/aura_shell/app_list/app_list_item_model_observer.h"
+
+namespace aura_shell {
+
+AppListItemModel::AppListItemModel() {
+}
+
+AppListItemModel::~AppListItemModel() {
+}
+
+void AppListItemModel::SetIcon(const SkBitmap& icon) {
+  icon_ = icon;
+  FOR_EACH_OBSERVER(AppListItemModelObserver, observers_,
+                    ItemIconChanged());
+}
+
+void AppListItemModel::SetTitle(const std::string& title) {
+  title_ = title;
+  FOR_EACH_OBSERVER(AppListItemModelObserver, observers_,
+                    ItemTitleChanged());
+}
+
+void AppListItemModel::AddObserver(AppListItemModelObserver* observer) {
+  observers_.AddObserver(observer);
+}
+
+void AppListItemModel::RemoveObserver(AppListItemModelObserver* observer) {
+  observers_.RemoveObserver(observer);
+}
+
+}  // namespace aura_shell