fixup! Reland "Migrate ContentHashFetcher to SimpleURLLoader"

This CL is a trivial fixup of https://crrev.com/c/1076947; it deletes
some left-over code in ContentVerifier::BindURLLoaderFactoryRequestOnUIThread:
|network::mojom::URLLoaderFactoryParamsPtr params|.

TBR=rdevlin.cronin@chromium.org

Bug=844926

Change-Id: I493c29034ba61b59a99a4c9d2fd0ebd1a5717145
Reviewed-on: https://chromium-review.googlesource.com/1174654Reviewed-by: Antonio Gomes <tonikitoo@igalia.com>
Commit-Queue: Antonio Gomes <tonikitoo@igalia.com>
Cr-Commit-Position: refs/heads/master@{#582993}

extensions/browser/content_verifier.cc

@@ -606,10 +606,6 @@ void ContentVerifier::BindURLLoaderFactoryRequestOnUIThread(
   if (shutdown_on_ui_)
     return;
 
-  network::mojom::URLLoaderFactoryParamsPtr params =
-      network::mojom::URLLoaderFactoryParams::New();
-  params->process_id = network::mojom::kBrowserProcessId;
-  params->is_corb_enabled = false;
   content::BrowserContext::GetDefaultStoragePartition(context_)
       ->GetURLLoaderFactoryForBrowserProcess()
       ->Clone(std::move(url_loader_factory_request));