Cancel the request when URLLoader is gone

content/browser/loader/resource_dispatcher_host_impl.h

Index: content/browser/loader/resource_dispatcher_host_impl.h
diff --git a/content/browser/loader/resource_dispatcher_host_impl.h b/content/browser/loader/resource_dispatcher_host_impl.h
index c7cd2d9aff2e41ad3a2db2321a9bad9dd5d63906..344047113af5171f57e097e4791bad0243951513 100644
--- a/content/browser/loader/resource_dispatcher_host_impl.h
+++ b/content/browser/loader/resource_dispatcher_host_impl.h
@@ -347,6 +347,11 @@ class CONTENT_EXPORT ResourceDispatcherHostImpl
   // of |request_id_| for the details. Must be called on the IO thread.
   int MakeRequestID();
 
+  // Cancels a request as requested by a renderer.
+  // Note that this cancel is subtly different from the other CancelRequest
+  // methods in this file, which also tear down the loader.
+  void CancelRequestFromRenderer(GlobalRequestID request_id);
+
  private:
   friend class ResourceDispatcherHostTest;