[Extensions] Migrate ExtensionInstallPrompt::Delegate to be a callback

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 27 matching lines @@
 // standalone installs:
 // 1) Downloads and parses metadata from the webstore.
 // 2) Optionally shows an install dialog.
 // 3) Starts download once the user confirms (if confirmation was requested).
 // 4) Optionally shows a post-install UI.
 // Follows the Template Method pattern. Implementing subclasses must override
 // the primitive hooks in the corresponding section below.
 
 class WebstoreStandaloneInstaller
     : public base::RefCountedThreadSafe<WebstoreStandaloneInstaller>,
-      public ExtensionInstallPrompt::Delegate,
       public WebstoreDataFetcherDelegate,
       public WebstoreInstaller::Delegate,
       public WebstoreInstallHelper::Delegate {
  public:
   // A callback for when the install process completes, successfully or not. If
   // there was a failure, |success| will be false and |error| may contain a
   // developer-readable error message about why it failed.
   typedef base::Callback<void(bool success,
                               const std::string& error,
                               webstore_install::Result result)> Callback;
@@ skipping 86 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.
-  void InstallUIProceed() override;
-  void InstallUIAbort(bool user_initiated) override;
+  // Called once the install prompt has finished.
+  virtual void OnInstallPromptDone(ExtensionInstallPrompt::Result result);
 
   // 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 80 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_