[Net] Assert that URLRequests with LOAD_IGNORE_LIMITS have MAXIMUM_PRIORITY

net/proxy/proxy_script_fetcher_impl.cc

Index: net/proxy/proxy_script_fetcher_impl.cc
diff --git a/net/proxy/proxy_script_fetcher_impl.cc b/net/proxy/proxy_script_fetcher_impl.cc
index 68a8205729a00639315ed1a1ca5838ac07a2d583..705bbbf26b017e2853374f91d291812c16d2274e 100644
--- a/net/proxy/proxy_script_fetcher_impl.cc
+++ b/net/proxy/proxy_script_fetcher_impl.cc
@@ -147,8 +147,8 @@ int ProxyScriptFetcherImpl::Fetch(
   // checking in order to avoid a circular dependency when attempting to fetch
   // the OCSP response or CRL. We could make the revocation check go direct but
   // the proxy might be the only way to the outside world.
-  cur_request_->set_load_flags(LOAD_BYPASS_PROXY | LOAD_DISABLE_CACHE |
-                               LOAD_DISABLE_CERT_REVOCATION_CHECKING);
+  cur_request_->SetLoadFlags(LOAD_BYPASS_PROXY | LOAD_DISABLE_CACHE |
+                             LOAD_DISABLE_CERT_REVOCATION_CHECKING);
 
   // Save the caller's info for notification on completion.
   callback_ = callback;