[Mac] Add interactive App Shim test.

chrome/browser/web_applications/web_app_mac.h

 // 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.
 
 #ifndef CHROME_BROWSER_WEB_APPLICATIONS_WEB_APP_MAC_H_
 #define CHROME_BROWSER_WEB_APPLICATIONS_WEB_APP_MAC_H_
 
 #include <string>
 #include <vector>
 
 #include "base/basictypes.h"
 #include "base/files/file_path.h"
 #include "base/gtest_prod_util.h"
 #include "chrome/browser/web_applications/web_app.h"
 #include "extensions/common/manifest_handlers/file_handler_info.h"
 
+// Whether to enable update and launch of app shims in tests. (Normally shims
+// are never created or launched in tests). Note that update only creates
+// internal shim bundles, i.e. it does not create new shims in ~/Applications.
+extern bool g_app_shims_allow_update_and_launch_in_tests;
+
 namespace web_app {
 
 // Returns the full path of the .app shim that would be created by
 // CreateShortcuts().
 base::FilePath GetAppInstallPath(const ShortcutInfo& shortcut_info);
 
 // If necessary, launch the shortcut for an app.
 void MaybeLaunchShortcut(const ShortcutInfo& shortcut_info);
 
 // Creates a shortcut for a web application. The shortcut is a stub app
@@ skipping 77 matching lines @@
 
   // The app's file handlers.
   extensions::FileHandlersInfo file_handlers_info_;
 
   DISALLOW_COPY_AND_ASSIGN(WebAppShortcutCreator);
 };
 
 }  // namespace web_app
 
 #endif  // CHROME_BROWSER_WEB_APPLICATIONS_WEB_APP_MAC_H_