fix an instance of bugprone-argument-comment

This new clang-tidy check complains when param names /*in_comments=*/
don't match up with the actual parameter name they're being passed to.
Sometimes this is benign, other times, actual bugs are found.

Bug: 1136209
Change-Id: I808b5a1ee49e56e51e21961d3e7d1a4b937a1c05
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2458867Reviewed-by: Charlie Harrison <csharrison@chromium.org>
Commit-Queue: George Burgess <gbiv@chromium.org>
Cr-Commit-Position: refs/heads/master@{#815690}

chrome/browser/loader/url_loader_factory_proxy_impl.cc

@@ -45,7 +45,7 @@ void UrlLoaderFactoryProxyImpl::GetProxiedURLLoaderFactory(
       /*navigation_id=*/base::nullopt,
       base::UkmSourceId::FromInt64(frame_host->GetPageUkmSourceId()),
       &proxied_factory,
-      /*headber_client=*/nullptr);
+      /*header_client=*/nullptr);
 
   mojo::FusePipes(std::move(proxied_factory), std::move(original_factory));
 }