cleanup: Remove NOTIFICATION_EXTENSION_INSTALLED_DEPRECATED from c/b/apps

chrome/browser/apps/shortcut_manager.h

Index: chrome/browser/apps/shortcut_manager.h
diff --git a/chrome/browser/apps/shortcut_manager.h b/chrome/browser/apps/shortcut_manager.h
index b94101e6542cc137ab80e3fb100b976e01b963cb..63e9112e30c1fa02bbc3570c0703be170f3b751a 100644
--- a/chrome/browser/apps/shortcut_manager.h
+++ b/chrome/browser/apps/shortcut_manager.h
@@ -5,15 +5,21 @@
 #ifndef CHROME_BROWSER_APPS_SHORTCUT_MANAGER_H_
 #define CHROME_BROWSER_APPS_SHORTCUT_MANAGER_H_
 
+#include "base/scoped_observer.h"
 #include "chrome/browser/profiles/profile_info_cache_observer.h"
 #include "components/keyed_service/core/keyed_service.h"
 #include "content/public/browser/notification_observer.h"
 #include "content/public/browser/notification_registrar.h"
+#include "extensions/browser/extension_registry_observer.h"
 #include "extensions/common/extension.h"
 
 class PrefService;
 class Profile;
 
+namespace extensions {
+class ExtensionRegistry;
+}
+
 namespace user_prefs {
 class PrefRegistrySyncable;
 }
@@ -21,6 +27,7 @@ class PrefRegistrySyncable;
 // This class manages the installation of shortcuts for platform apps.
 class AppShortcutManager : public KeyedService,
                            public content::NotificationObserver,
+                           public extensions::ExtensionRegistryObserver,
                            public ProfileInfoCacheObserver {
  public:
   static void RegisterProfilePrefs(user_prefs::PrefRegistrySyncable* registry);
@@ -33,12 +40,22 @@ class AppShortcutManager : public KeyedService,
   // creates shortcuts for all apps.
   void OnceOffCreateShortcuts();
 
-  // content::NotificationObserver
+  // content::NotificationObserver.
   virtual void Observe(int type,
                        const content::NotificationSource& source,
                        const content::NotificationDetails& details) OVERRIDE;
 
-  // ProfileInfoCacheObserver
+  // extensions::ExtensionRegistryObserver.
+  virtual void OnExtensionWillBeInstalled(
+      content::BrowserContext* browser_context,
+      const extensions::Extension* extension,
+      bool is_update,
+      const std::string& old_name) OVERRIDE;
+  virtual void OnExtensionUninstalled(
+      content::BrowserContext* browser_context,
+      const extensions::Extension* extension) OVERRIDE;
+
+  // ProfileInfoCacheObserver.
   virtual void OnProfileWillBeRemoved(
       const base::FilePath& profile_path) OVERRIDE;
 
@@ -50,6 +67,10 @@ class AppShortcutManager : public KeyedService,
   bool is_profile_info_cache_observer_;
   PrefService* prefs_;
 
+  ScopedObserver<extensions::ExtensionRegistry,
+                 extensions::ExtensionRegistryObserver>
+      extension_registry_observer_;
+
   DISALLOW_COPY_AND_ASSIGN(AppShortcutManager);
 };