Allow the user to "repair" a corrupted extension.

chrome/browser/extensions/webstore_standalone_installer.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_WEBSTORE_STANDALONE_INSTALLER_H_
 #define CHROME_BROWSER_EXTENSIONS_WEBSTORE_STANDALONE_INSTALLER_H_
 
 #include <string>
 
 #include "base/callback.h"
@@ skipping 46 matching lines @@
                               webstore_install::Result result)> Callback;
 
   WebstoreStandaloneInstaller(const std::string& webstore_item_id,
                               Profile* profile,
                               const Callback& callback);
   void BeginInstall();
 
  protected:
   virtual ~WebstoreStandaloneInstaller();
 
+  // Runs the callback; primarily used for running a callback before it is
+  // cleared in AbortInstall().
+  void RunCallback(
+      bool success, const std::string& error, webstore_install::Result result);
+
   // Called when the install should be aborted. The callback is cleared.
   void AbortInstall();
 
   // Checks InstallTracker and returns true if the same extension is not
   // currently being installed. Registers this install with the InstallTracker.
   bool EnsureUniqueInstall(webstore_install::Result* reason,
                            std::string* error);
 
   // Called when the install is complete.
   virtual void CompleteInstall(webstore_install::Result result,
@@ skipping 62 matching lines @@
   // ProceedWithInstallPrompt().
   virtual void OnManifestParsed();
 
   // Returns an install UI to be shown. By default, this returns an install UI
   // that is a transient child of the host window for GetWebContents().
   virtual scoped_ptr<ExtensionInstallPrompt> CreateInstallUI();
 
   // Create an approval to pass installation parameters to the CrxInstaller.
   virtual scoped_ptr<WebstoreInstaller::Approval> CreateApproval() const;
 
+  // ExtensionInstallPrompt::Delegate interface implementation.
+  virtual void InstallUIProceed() OVERRIDE;
+  virtual void InstallUIAbort(bool user_initiated) OVERRIDE;
+
   // Accessors to be used by subclasses.
   bool show_user_count() const { return show_user_count_; }
   const std::string& localized_user_count() const {
     return localized_user_count_;
   }
   double average_rating() const { return average_rating_; }
   int rating_count() const { return rating_count_; }
   void set_install_source(WebstoreInstaller::InstallSource source) {
     install_source_ = source;
   }
@@ skipping 36 matching lines @@
   // WebstoreInstallHelper::Delegate interface implementation.
   virtual void OnWebstoreParseSuccess(
       const std::string& id,
       const SkBitmap& icon,
       base::DictionaryValue* parsed_manifest) OVERRIDE;
   virtual void OnWebstoreParseFailure(
       const std::string& id,
       InstallHelperResultCode result_code,
       const std::string& error_message) OVERRIDE;
 
-  // ExtensionInstallPrompt::Delegate interface implementation.
-  virtual void InstallUIProceed() OVERRIDE;
-  virtual void InstallUIAbort(bool user_initiated) OVERRIDE;
-
   // WebstoreInstaller::Delegate interface implementation.
   virtual void OnExtensionInstallSuccess(const std::string& id) OVERRIDE;
   virtual void OnExtensionInstallFailure(
       const std::string& id,
       const std::string& error,
       WebstoreInstaller::FailureReason reason) OVERRIDE;
 
   void ShowInstallUI();
   void OnWebStoreDataFetcherDone();
 
@@ skipping 27 matching lines @@
   // Created by ShowInstallUI() when a prompt is shown (if
   // the implementor returns a non-NULL in CreateInstallPrompt()).
   scoped_refptr<Extension> localized_extension_for_display_;
 
   DISALLOW_IMPLICIT_CONSTRUCTORS(WebstoreStandaloneInstaller);
 };
 
 }  // namespace extensions
 
 #endif  // CHROME_BROWSER_EXTENSIONS_WEBSTORE_STANDALONE_INSTALLER_H_