Skeleton for app_list on OSX, and refactoring for enable_app_list=1 on OS=="mac".

chrome/browser/ui/app_list/app_list_controller_browsertest.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 "chrome/browser/ui/app_list/app_list_controller.h"
+#include "chrome/test/base/in_process_browser_test.h"
+
+// Browser Test for AppListController that runs on all platforms supporting
+// app_list.
+class AppListControllerBrowserTest : public InProcessBrowserTest {
+ public:
+  AppListControllerBrowserTest() {
+    app_list_controller::InitAppList();
+  }
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(AppListControllerBrowserTest);
+};
+
+// Test showing the app list, followed by browser close.
+IN_PROC_BROWSER_TEST_F(AppListControllerBrowserTest, ShowAndShutdown) {
+  app_list_controller::ShowAppList();
+}