Allow the user to "repair" a corrupted extension.

chrome/browser/extensions/extension_install_prompt.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.
 
 #ifndef CHROME_BROWSER_EXTENSIONS_EXTENSION_INSTALL_PROMPT_H_
 #define CHROME_BROWSER_EXTENSIONS_EXTENSION_INSTALL_PROMPT_H_
 
 #include <string>
 #include <vector>
 
@@ skipping 57 matching lines @@
     UNSET_PROMPT_TYPE = -1,
     INSTALL_PROMPT = 0,
     INLINE_INSTALL_PROMPT,
     BUNDLE_INSTALL_PROMPT,
     RE_ENABLE_PROMPT,
     PERMISSIONS_PROMPT,
     EXTERNAL_INSTALL_PROMPT,
     POST_INSTALL_PERMISSIONS_PROMPT,
     LAUNCH_PROMPT,
     REMOTE_INSTALL_PROMPT,
+    REPAIR_PROMPT,
     NUM_PROMPT_TYPES
   };
 
   enum DetailsType {
     PERMISSIONS_DETAILS = 0,
     RETAINED_FILES_DETAILS,
   };
 
   static std::string PromptTypeToString(PromptType type);
 
@@ skipping 330 matching lines @@
   Delegate* delegate_;
 
   // A pre-filled prompt.
   scoped_refptr<Prompt> prompt_;
 
   // Used to show the confirm dialog.
   ShowDialogCallback show_dialog_callback_;
 };
 
 #endif  // CHROME_BROWSER_EXTENSIONS_EXTENSION_INSTALL_PROMPT_H_