Clean up async app launcher enabled checks.

chrome/browser/ui/cocoa/bookmarks/bookmark_bar_bridge.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.
 
 // C++ bridge class between Chromium and Cocoa to connect the
 // Bookmarks (model) with the Bookmark Bar (view).
 //
 // There is exactly one BookmarkBarBridge per BookmarkBarController /
 // BrowserWindowController / Browser.
 
@@ skipping 44 matching lines @@
   BookmarkBarController* controller_;  // weak; owns me
   BookmarkModel* model_;  // weak; it is owned by a Profile.
   bool batch_mode_;
 
   // Needed to react to kShowAppsShortcutInBookmarkBar changes.
   PrefChangeRegistrar profile_pref_registrar_;
 
   // Updates the visibility of the apps shortcut based on the pref value.
   void OnAppsPageShortcutVisibilityPrefChanged();
 
-  // Updates the visibility of the apps shortcut once we know if the app
-  // launcher is enabled.
-  void OnAppLauncherEnabledCompleted(bool app_launcher_enabled);
-
   DISALLOW_COPY_AND_ASSIGN(BookmarkBarBridge);
 };
 
 #endif  // CHROME_BROWSER_UI_COCOA_BOOKMARKS_BOOKMARK_BAR_BRIDGE_H_