Revert of [Extension UI Views] Add tests for clicking the different message bubble buttons

chrome/browser/ui/extensions/extension_message_bubble_factory.h

 // Copyright 2015 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_UI_EXTENSIONS_EXTENSION_MESSAGE_BUBBLE_FACTORY_H_
 #define CHROME_BROWSER_UI_EXTENSIONS_EXTENSION_MESSAGE_BUBBLE_FACTORY_H_
 
 #include "base/macros.h"
 #include "base/memory/scoped_ptr.h"
 
@@ skipping 16 matching lines @@
   };
 
   explicit ExtensionMessageBubbleFactory(Browser* browser);
   ~ExtensionMessageBubbleFactory();
 
   // Returns the controller for the bubble that should be shown, if any.
   scoped_ptr<extensions::ExtensionMessageBubbleController> GetController();
 
   // Overrides the default behavior for testing.
   static void set_override_for_tests(OverrideForTesting override);
-  static bool is_enabled_for_testing();
 
  private:
   Browser* browser_;
 
   DISALLOW_COPY_AND_ASSIGN(ExtensionMessageBubbleFactory);
 };
 
 #endif  // CHROME_BROWSER_UI_EXTENSIONS_EXTENSION_MESSAGE_BUBBLE_FACTORY_H_