Not show the launcher during Chrome app installation

chrome/browser/extensions/webstore_installer.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_EXTENSIONS_WEBSTORE_INSTALLER_H_
 #define CHROME_BROWSER_EXTENSIONS_WEBSTORE_INSTALLER_H_
 
 #include <list>
 #include <memory>
 #include <string>
@@ skipping 124 matching lines @@
 
     // Whether to skip the post install UI like the extension installed bubble.
     bool skip_post_install_ui;
 
     // Whether to skip the install dialog once the extension has been downloaded
     // and unpacked. One reason this can be true is that in the normal webstore
     // installation, the dialog is shown earlier, before any download is done,
     // so there's no need to show it again.
     bool skip_install_dialog;
 
-    // Whether we should enable the launcher before installing the app.
-    bool enable_launcher;
-
     // Manifest check level for checking actual manifest against expected
     // manifest.
     ManifestCheckLevel manifest_check_level;
 
     // Used to show the install dialog.
     ExtensionInstallPrompt::ShowDialogCallback show_dialog_callback;
 
     // The icon to use to display the extension while it is installing.
     gfx::ImageSkia installing_icon;
 
@@ skipping 125 matching lines @@
   std::list<SharedModuleInfo::ImportInfo> pending_modules_;
   // Total extension modules we need download and install (the main module and
   // depedences).
   int total_modules_;
   bool download_started_;
 };
 
 }  // namespace extensions
 
 #endif  // CHROME_BROWSER_EXTENSIONS_WEBSTORE_INSTALLER_H_