Implementation of the "Redirect URLs to Packaged Apps" feature.

content/public/browser/notification_types.h

Index: content/public/browser/notification_types.h
diff --git a/content/public/browser/notification_types.h b/content/public/browser/notification_types.h
index 0125ff9e97a27ff25d0cc9d042c1e11cb1b322ab..32265c9ccf36120379cf0b894296e987b53c9b25 100644
--- a/content/public/browser/notification_types.h
+++ b/content/public/browser/notification_types.h
@@ -234,6 +234,12 @@ enum NotificationType {
   // the RenderViewHost, and the details is a DomOperationNotificationDetails.
   NOTIFICATION_DOM_OPERATION_RESPONSE,
 
+  // Instruction from RendererProcessHost (via ChromeContentRendererClient) to
+  // the browser to take over and handle the URL. This is used,
+  // for example, to redirect to the app WebKit-initiated navigations to URLs
+  // that some platform app has claimed it can handle.
+  NOTIFICATION_HANDLE_URL_IN_BROWSER,
+
   // Custom notifications used by the embedder should start from here.
   NOTIFICATION_CONTENT_END,
 };