Experimental app list: Added "All apps" button on start page.

ui/app_list/views/all_apps_tile_item_view.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 "ui/app_list/views/all_apps_tile_item_view.h"
+
+#include "ui/app_list/views/contents_view.h"
+#include "ui/base/l10n/l10n_util.h"
+#include "ui/strings/grit/ui_strings.h"
+
+namespace app_list {
+
+AllAppsTileItemView::AllAppsTileItemView(ContentsView* contents_view)
+    : contents_view_(contents_view) {
+  SetTitle(l10n_util::GetStringUTF16(IDS_APP_LIST_ALL_APPS));
+  // TODO(mgiuca): Set the button's icon.
+}
+
+AllAppsTileItemView::~AllAppsTileItemView() {
+}
+
+void AllAppsTileItemView::ButtonPressed(views::Button* sender,
+                                        const ui::Event& event) {
+  contents_view_->SetActivePage(
+      contents_view_->GetPageIndexForState(AppListModel::STATE_APPS));
+}
+
+}  // namespace app_list