Move/replace/rename URL-based extension getters from ExtensionService to/in ExtensionSet.

chrome/browser/notifications/desktop_notification_service.cc

Index: chrome/browser/notifications/desktop_notification_service.cc
diff --git a/chrome/browser/notifications/desktop_notification_service.cc b/chrome/browser/notifications/desktop_notification_service.cc
index 8a05b621d62f9d932f4e9c307984af28fd9561df..9bc74ac3a239bedd4f3380c90f354bc01b887ee1 100644
--- a/chrome/browser/notifications/desktop_notification_service.cc
+++ b/chrome/browser/notifications/desktop_notification_service.cc
@@ -406,9 +406,10 @@ string16 DesktopNotificationService::DisplayNameForOrigin(
     const GURL& origin) {
   // If the source is an extension, lookup the display name.
   if (origin.SchemeIs(chrome::kExtensionScheme)) {
-    ExtensionService* ext_service = profile_->GetExtensionService();
-    if (ext_service) {
-      const Extension* extension = ext_service->GetExtensionByURL(origin);
+    ExtensionService* extension_service = profile_->GetExtensionService();
+    if (extension_service) {
+      const Extension* extension =
+          extension_service->extensions()->GetByURL(ExtensionURLInfo(origin));
       if (extension)
         return UTF8ToUTF16(extension->name());
     }