Improve UI for unpacked extensions failing to load

chrome/browser/chrome_notification_types.h

 // Copyright 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_CHROME_NOTIFICATION_TYPES_H_
 #define CHROME_BROWSER_CHROME_NOTIFICATION_TYPES_H_
 
 #include "build/build_config.h"
 #include "content/public/browser/notification_types.h"
 
@@ skipping 397 matching lines @@
   // DEPRECATED: Use ExtensionRegistry::AddObserver instead.
   //
   // Sent when a new extension is loaded. The details are an Extension, and
   // the source is a Profile.
   NOTIFICATION_EXTENSION_LOADED_DEPRECATED,
 
   // An error occured while attempting to load an extension. The details are a
   // string with details about why the load failed.
   NOTIFICATION_EXTENSION_LOAD_ERROR,
 
-  // Sent when an unpacked extension fails to load. The details are a std::pair,
-  // the first object is a boolean signifying the user's retry response value,
-  // and the second object is a const base::FilePath& of the extension that
-  // failed to load. Source is a Profile.
-  NOTIFICATION_EXTENSION_LOAD_RETRY,
-
   // Sent when an extension is enabled. Under most circumstances, listeners
   // will want to use NOTIFICATION_EXTENSION_LOADED_DEPRECATED. This
   // notification is only
   // fired when the "Enable" button is hit in the extensions tab.  The details
   // are an Extension, and the source is a Profile.
   NOTIFICATION_EXTENSION_ENABLED,
 
   // Sent when attempting to load a new extension, but they are disabled. The
   // details are an Extension*, and the source is a Profile*.
   NOTIFICATION_EXTENSION_UPDATE_DISABLED,
@@ skipping 512 matching lines @@
   // Note:-
   // Currently only Content and Chrome define and use notifications.
   // Custom notifications not belonging to Content and Chrome should start
   // from here.
   NOTIFICATION_CHROME_END,
 };
 
 }  // namespace chrome
 
 #endif  // CHROME_BROWSER_CHROME_NOTIFICATION_TYPES_H_