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 a8fff5e60853cdbb913a7f5cda7ca5afe5e4509f..f9046ea05968bca38968300962f64599a08159d0 100644
--- a/content/browser/loader/resource_dispatcher_host_impl.h
+++ b/content/browser/loader/resource_dispatcher_host_impl.h
@@ -342,6 +342,11 @@ 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;