Revert 126256 - Show a different icon in the launcher for incognito windows

chrome/browser/ui/views/ash/launcher/chrome_launcher_delegate.h

Index: chrome/browser/ui/views/ash/launcher/chrome_launcher_delegate.h
===================================================================
--- chrome/browser/ui/views/ash/launcher/chrome_launcher_delegate.h	(revision 126259)
+++ chrome/browser/ui/views/ash/launcher/chrome_launcher_delegate.h	(working copy)
@@ -43,12 +43,6 @@
     APP_TYPE_TAB
   };
 
-  // Indicates if a launcher item is incognito or not.
-  enum IncognitoState {
-    STATE_INCOGNITO,
-    STATE_NOT_INCOGNITO,
-  };
-
   // Interface used to load app icons. This is in it's own class so that it can
   // be mocked.
   class AppIconLoader {
@@ -81,8 +75,7 @@
   static void RegisterUserPrefs(PrefService* user_prefs);
 
   // Creates a new tabbed item on the launcher for |updater|.
-  ash::LauncherID CreateTabbedLauncherItem(LauncherUpdater* updater,
-                                           IncognitoState is_incognito);
+  ash::LauncherID CreateTabbedLauncherItem(LauncherUpdater* updater);
 
   // Creates a new app item on the launcher for |updater|. If there is an
   // existing pinned app that isn't running on the launcher, its id is returned.