cleanup/ Use ExtensionRegistry in ExtensionSettingsHandler

chrome/browser/ui/webui/extensions/extension_settings_handler.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_UI_WEBUI_EXTENSIONS_EXTENSION_SETTINGS_HANDLER_H_
 #define CHROME_BROWSER_UI_WEBUI_EXTENSIONS_EXTENSION_SETTINGS_HANDLER_H_
 
 #include <set>
 #include <string>
 #include <vector>
 
 #include "base/memory/scoped_ptr.h"
 #include "base/prefs/pref_change_registrar.h"
 #include "base/scoped_observer.h"
 #include "chrome/browser/extensions/error_console/error_console.h"
 #include "chrome/browser/extensions/extension_install_prompt.h"
 #include "chrome/browser/extensions/extension_install_ui.h"
 #include "chrome/browser/extensions/extension_uninstall_dialog.h"
 #include "chrome/browser/extensions/extension_warning_service.h"
 #include "chrome/browser/extensions/requirements_checker.h"
 #include "content/public/browser/navigation_controller.h"
 #include "content/public/browser/notification_observer.h"
 #include "content/public/browser/notification_registrar.h"
 #include "content/public/browser/web_contents_observer.h"
 #include "content/public/browser/web_ui_message_handler.h"
 #include "extensions/browser/extension_prefs.h"
 #include "extensions/browser/extension_prefs_observer.h"
+#include "extensions/browser/extension_registry_observer.h"
 #include "url/gurl.h"
 
 class ExtensionService;
 
 namespace base {
 class DictionaryValue;
 class FilePath;
 class ListValue;
 }
 
 namespace content {
 class WebUIDataSource;
 }
 
 namespace user_prefs {
 class PrefRegistrySyncable;
 }
 
 namespace extensions {
 class Extension;
+class ExtensionRegistry;
 class ManagementPolicy;
 
 // Information about a page running in an extension, for example a popup bubble,
 // a background page, or a tab contents.
 struct ExtensionPage {
   ExtensionPage(const GURL& url,
                 int render_process_id,
                 int render_view_id,
                 bool incognito,
                 bool generated_background_page);
   GURL url;
   int render_process_id;
   int render_view_id;
   bool incognito;
   bool generated_background_page;
 };
 
 // Extension Settings UI handler.
 class ExtensionSettingsHandler
     : public content::WebUIMessageHandler,
       public content::NotificationObserver,
       public content::WebContentsObserver,
       public ErrorConsole::Observer,
       public ExtensionInstallPrompt::Delegate,
       public ExtensionPrefsObserver,
+      public ExtensionRegistryObserver,
       public ExtensionUninstallDialog::Delegate,
       public ExtensionWarningService::Observer,
       public base::SupportsWeakPtr<ExtensionSettingsHandler> {
  public:
   ExtensionSettingsHandler();
   virtual ~ExtensionSettingsHandler();
 
   static void RegisterProfilePrefs(user_prefs::PrefRegistrySyncable* registry);
 
   // Extension Detail JSON Struct for page. |pages| is injected for unit
@@ skipping 25 matching lines @@
   virtual void RegisterMessages() OVERRIDE;
 
   // ErrorConsole::Observer implementation.
   virtual void OnErrorAdded(const ExtensionError* error) OVERRIDE;
 
   // content::NotificationObserver implementation.
   virtual void Observe(int type,
                        const content::NotificationSource& source,
                        const content::NotificationDetails& details) OVERRIDE;
 
+  // ExtensionRegistryObserver implementation.
+  virtual void OnExtensionLoaded(content::BrowserContext* browser_context,
+                                 const Extension* extension) OVERRIDE;
+  virtual void OnExtensionUnloaded(
+      content::BrowserContext* browser_context,
+      const Extension* extension,
+      UnloadedExtensionInfo::Reason reason) OVERRIDE;
+  virtual void OnExtensionUninstalled(content::BrowserContext* browser_context,
+                                      const Extension* extension) OVERRIDE;
+
   // ExtensionPrefsObserver implementation.
   virtual void OnExtensionDisableReasonsChanged(const std::string& extension_id,
                                                 int disable_reasons) OVERRIDE;
 
   // ExtensionUninstallDialog::Delegate implementation, used for receiving
   // notification about uninstall confirmation dialog selections.
   virtual void ExtensionUninstallAccepted() OVERRIDE;
   virtual void ExtensionUninstallCanceled() OVERRIDE;
 
   // ExtensionWarningService::Observer implementation.
@@ skipping 144 matching lines @@
       warning_service_observer_;
 
   // An observer to listen for when Extension errors are reported.
   ScopedObserver<ErrorConsole, ErrorConsole::Observer> error_console_observer_;
 
   // An observer to listen for notable changes in the ExtensionPrefs, like
   // a change in Disable Reasons.
   ScopedObserver<ExtensionPrefs, ExtensionPrefsObserver>
       extension_prefs_observer_;
 
+  ScopedObserver<ExtensionRegistry, ExtensionRegistryObserver>
+      extension_registry_observer_;
+
   // Whether we found any DISABLE_NOT_VERIFIED extensions and want to kick off
   // a verification check to try and rescue them.
   bool should_do_verification_check_;
 
   DISALLOW_COPY_AND_ASSIGN(ExtensionSettingsHandler);
 };
 
 }  // namespace extensions
 
 #endif  // CHROME_BROWSER_UI_WEBUI_EXTENSIONS_EXTENSION_SETTINGS_HANDLER_H_