Start refractoring extension permissions into ExtensionPermissionSet.

chrome/browser/chrome_content_browser_client.cc

Index: chrome/browser/chrome_content_browser_client.cc
diff --git a/chrome/browser/chrome_content_browser_client.cc b/chrome/browser/chrome_content_browser_client.cc
index aa77ee2b7aebba34774fafe3f5490567ef64bdda..fedbce97c67b4cd2f0c82ce2af48797609346a1c 100644
--- a/chrome/browser/chrome_content_browser_client.cc
+++ b/chrome/browser/chrome_content_browser_client.cc
@@ -398,7 +398,7 @@ WebKit::WebNotificationPresenter::Permission
   const Extension* extension =
       io_data->GetExtensionInfoMap()->extensions().GetByURL(source_url);
   if (extension &&
-      extension->HasApiPermission(Extension::kNotificationPermission)) {
+      extension->HasApiPermission(ExtensionAPIPermission::Notification())) {
     return WebKit::WebNotificationPresenter::PermissionAllowed;
   }
 
@@ -461,7 +461,7 @@ bool ChromeContentBrowserClient::CanCreateWindow(
     const Extension* extension =
         io_data->GetExtensionInfoMap()->extensions().GetByURL(source_url);
     return (extension &&
-            extension->HasApiPermission(Extension::kBackgroundPermission));
+            extension->HasApiPermission(ExtensionAPIPermission::Background()));
   }
   return true;
 }