Remove a TODO comment in URLLoader

We won't add a flag to control the callback of Early Hints since
having a trusted flag in ResourceRequest is a bit difficult.

Bug: N/A
Change-Id: Ie2900432df135fdd1349554e751247c24c97d628
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2781091
Auto-Submit: Kenichi Ishibashi <bashi@chromium.org>
Commit-Queue: Yutaka Hirano <yhirano@chromium.org>
Reviewed-by: Yutaka Hirano <yhirano@chromium.org>
Cr-Commit-Position: refs/heads/master@{#866410}

services/network/url_loader.cc

@@ -640,9 +640,6 @@ URLLoader::URLLoader(
         &URLLoader::SetRawResponseHeaders, base::Unretained(this)));
   }
 
-  // TODO(crbug.com/671310): We may want to add
-  // ResourceRequest::report_early_response so that we can bypass setting
-  // EarlyResponseHeadersCallback if the client can't handle Early Hints.
   url_request_->SetEarlyResponseHeadersCallback(base::BindRepeating(
       &URLLoader::NotifyEarlyResponse, base::Unretained(this)));