There are a lot of callsites in NetworkProcess that manually create a PreconnectTask with differing NetworkLoadParameters: * NetworkProcess::preconnectTo - used to preconnect to main resources * NetworkConnectionToWebProcess::preconnectTo - used to handle preconnects created by `<link rel="preconnect" ...>` * SpeculativeLoadManager::preconnectForSubresource - used to preconnect to subresource domains speculatively And then in 253120 I've added another callsite `EarlyHintsResourceLoader::startPreconnectTask`. It seems like we should be able to unify these callsites into something a bit saner.