[XHR] Abort method execution when m_loader->cancel() in internalAbort() caused reentry

Source/core/xml/XMLHttpRequest.h

Index: Source/core/xml/XMLHttpRequest.h
diff --git a/Source/core/xml/XMLHttpRequest.h b/Source/core/xml/XMLHttpRequest.h
index eaacfb0964122e52d1807a045315a05dc9340291..1f75c56e1859dc1c1445ba0ae7756ca45579a313 100644
--- a/Source/core/xml/XMLHttpRequest.h
+++ b/Source/core/xml/XMLHttpRequest.h
@@ -178,7 +178,8 @@ private:
     void callReadyStateChangeListener();
     void dropProtectionSoon();
     void dropProtection(Timer<XMLHttpRequest>* = 0);
-    void internalAbort(DropProtection = DropProtectionSync);
+    // Returns false iff reentry happened and a new load is started.
+    bool internalAbort(DropProtection = DropProtectionSync);
     void clearResponse();
     void clearResponseBuffers();
     void clearRequest();