[abort] [do not commit] don't stop loaders on canceled navigations

public/platform/WebURLLoaderClient.h

Index: public/platform/WebURLLoaderClient.h
diff --git a/public/platform/WebURLLoaderClient.h b/public/platform/WebURLLoaderClient.h
index 6e28fb762b877eaa84d08bda07bb4373321870eb..30217384ff09785e749c0581ef0eedcdbafd205e 100644
--- a/public/platform/WebURLLoaderClient.h
+++ b/public/platform/WebURLLoaderClient.h
@@ -69,6 +69,8 @@ public:
     // Called when the load completes with an error.
     virtual void didFail(WebURLLoader*, const WebURLError&) { }
 
+    virtual void didRequestStartForFrame(WebURLLoader*) { }
+
 protected:
     virtual ~WebURLLoaderClient() { }
 };