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

chrome/browser/extensions/extension_reenabler.h

 // Copyright 2014 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_REENABLER_H_
 #define CHROME_BROWSER_EXTENSIONS_EXTENSION_REENABLER_H_
 
 #include "base/callback.h"
 #include "base/macros.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
+#include "base/memory/weak_ptr.h"
 #include "base/scoped_observer.h"
 #include "chrome/browser/extensions/extension_install_prompt.h"
 #include "chrome/browser/extensions/webstore_data_fetcher_delegate.h"
 #include "extensions/browser/extension_registry_observer.h"
 
 namespace content {
 class BrowserContext;
 }
 
 namespace extensions {
 
 class Extension;
 class ExtensionRegistry;
 class WebstoreDataFetcher;
 
 // A class to handle reenabling an extension disabled due to a permissions
 // increase.
 // TODO(devlin): Once we get the UI figured out, we should also have this handle
 // other disable reasons.
-class ExtensionReenabler : public ExtensionInstallPrompt::Delegate,
-                           public ExtensionRegistryObserver,
+class ExtensionReenabler : public ExtensionRegistryObserver,
                            public WebstoreDataFetcherDelegate {
  public:
   enum ReenableResult {
     REENABLE_SUCCESS,  // The extension has been successfully re-enabled.
     USER_CANCELED,     // The user chose to not re-enable the extension.
     NOT_ALLOWED,       // The re-enable is not allowed.
     ABORTED,           // The re-enable process was aborted due to, e.g.,
                        // shutdown or a bad webstore response.
   };
 
@@ skipping 22 matching lines @@
 
  private:
   ExtensionReenabler(
       const scoped_refptr<const Extension>& extension,
       content::BrowserContext* browser_context,
       const GURL& referrer_url,
       const Callback& callback,
       content::WebContents* web_contents,
       const ExtensionInstallPrompt::ShowDialogCallback& show_callback);
 
-  // ExtensionInstallPrompt::Delegate:
-  void InstallUIProceed() override;
-  void InstallUIAbort(bool user_initiated) override;
+  void OnInstallPromptDone(ExtensionInstallPrompt::Result result);
 
   // ExtensionRegistryObserver:
   void OnExtensionLoaded(content::BrowserContext* browser_context,
                          const Extension* extension) override;
   void OnExtensionUninstalled(content::BrowserContext* browser_context,
                               const Extension* extension,
                               UninstallReason reason) override;
 
   // WebstoreDataFetcherDelegate:
   void OnWebstoreRequestFailure() override;
@@ skipping 25 matching lines @@
 
   // Indicates whether the re-enable process finished.
   bool finished_;
 
   // The data fetcher for retrieving webstore data.
   scoped_ptr<WebstoreDataFetcher> webstore_data_fetcher_;
 
   ScopedObserver<ExtensionRegistry, ExtensionRegistryObserver>
       registry_observer_;
 
+  base::WeakPtrFactory<ExtensionReenabler> weak_factory_;
+
   DISALLOW_COPY_AND_ASSIGN(ExtensionReenabler);
 };
 
 }  // namespace extensions
 
 #endif  // CHROME_BROWSER_EXTENSIONS_EXTENSION_REENABLER_H_