Remove deprecated extension notification

chrome/browser/extensions/lazy_background_page_apitest.cc

Index: chrome/browser/extensions/lazy_background_page_apitest.cc
diff --git a/chrome/browser/extensions/lazy_background_page_apitest.cc b/chrome/browser/extensions/lazy_background_page_apitest.cc
index 6c6e57d2da92cd3bbe4696c92ace6f4e61e71942..c8c9908b2838bb0e27ec22a00f0819988b129830 100644
--- a/chrome/browser/extensions/lazy_background_page_apitest.cc
+++ b/chrome/browser/extensions/lazy_background_page_apitest.cc
@@ -4,6 +4,7 @@
 
 #include "base/command_line.h"
 #include "base/files/file_path.h"
+#include "base/scoped_observer.h"
 #include "base/strings/utf_string_conversions.h"
 #include "chrome/browser/bookmarks/bookmark_model_factory.h"
 #include "chrome/browser/chrome_notification_types.h"
@@ -27,6 +28,8 @@
 #include "content/public/browser/web_contents.h"
 #include "content/public/test/browser_test_utils.h"
 #include "extensions/browser/extension_host.h"
+#include "extensions/browser/extension_registry.h"
+#include "extensions/browser/extension_registry_observer.h"
 #include "extensions/browser/extension_system.h"
 #include "extensions/common/extension.h"
 #include "extensions/common/switches.h"
@@ -44,11 +47,12 @@ namespace {
 // incognito involves reloading the extension - and the background pages may
 // have already loaded once before then. So we wait until the extension is
 // unloaded before listening to the background page notifications.
-class LoadedIncognitoObserver : public content::NotificationObserver {
+class LoadedIncognitoObserver : public extensions::ExtensionRegistryObserver {
  public:
-  explicit LoadedIncognitoObserver(Profile* profile) : profile_(profile) {
-    registrar_.Add(this, chrome::NOTIFICATION_EXTENSION_UNLOADED_DEPRECATED,
-                   content::Source<Profile>(profile));
+  explicit LoadedIncognitoObserver(Profile* profile)
+      : profile_(profile), extension_registry_observer_(this) {
+    extension_registry_observer_.Add(
+        extensions::ExtensionRegistry::Get(profile_));
   }
 
   void Wait() {
@@ -58,18 +62,19 @@ class LoadedIncognitoObserver : public content::NotificationObserver {
   }
 
  private:
-
-  virtual void Observe(
-      int type,
-      const content::NotificationSource& source,
-      const content::NotificationDetails& details) OVERRIDE {
+  virtual void OnExtensionUnloaded(
+      content::BrowserContext* browser_context,
+      const Extension* extension,
+      extensions::UnloadedExtensionInfo::Reason reason) OVERRIDE {
     original_complete_.reset(new LazyBackgroundObserver(profile_));
     incognito_complete_.reset(
         new LazyBackgroundObserver(profile_->GetOffTheRecordProfile()));
   }
 
   Profile* profile_;
-  content::NotificationRegistrar registrar_;
+  ScopedObserver<extensions::ExtensionRegistry,
+                 extensions::ExtensionRegistryObserver>
+      extension_registry_observer_;
   scoped_ptr<LazyBackgroundObserver> original_complete_;
   scoped_ptr<LazyBackgroundObserver> incognito_complete_;
 };