Attemp 2 at:

chrome/browser/extensions/extension_prefs.h

Index: chrome/browser/extensions/extension_prefs.h
diff --git a/chrome/browser/extensions/extension_prefs.h b/chrome/browser/extensions/extension_prefs.h
index 6977fb43ae848e851248803a41069c3a197a8804..38b84028ff262db3f8106ebfef27dacad6f99924 100644
--- a/chrome/browser/extensions/extension_prefs.h
+++ b/chrome/browser/extensions/extension_prefs.h
@@ -142,12 +142,6 @@ class ExtensionPrefs {
   // Returns the extension id's that have idle install information.
   std::set<std::string> GetIdleInstallInfoIds();
 
-  // Returns whether app toolbars are visible for the specified extension.
-  bool AreAppTabToolbarsVisible(const std::string& extension_id);
-
-  // Set whether app toolbars are visible for the specified extension.
-  void SetAppTabToolbarVisibility(const std::string& extension_id, bool value);
-
   static void RegisterUserPrefs(PrefService* prefs);
 
   // The underlying PrefService.