Changed variations net error to INVALID_REDIRECT

Variations service does not follow redirects when fetching seeds,
previously they were cancelled with ERR_ABORTED, this CL changes the
code to ERR_INVALID_REDIRECT to make them distinguishable from other
errors in metrics.

Bug: 902727
Change-Id: Ibaf9144d60333eb9fdfa4fa0c5420e9703ef19b4
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1540407Reviewed-by: Brian White <bcwhite@chromium.org>
Commit-Queue: Carlos IL <carlosil@chromium.org>
Cr-Commit-Position: refs/heads/master@{#644861}

components/variations/service/variations_service.cc

@@ -698,7 +698,7 @@ void VariationsService::OnSimpleLoaderCompleteOrRedirect(
   initial_request_completed_ = true;
 
   bool is_success = false;
-  int net_error = net::ERR_ABORTED;
+  int net_error = net::ERR_INVALID_REDIRECT;
   scoped_refptr<net::HttpResponseHeaders> headers;
 
   int response_code = -1;
@@ -710,7 +710,7 @@ void VariationsService::OnSimpleLoaderCompleteOrRedirect(
 
   // Variations seed fetches should not follow redirects, so if this request was
   // redirected, keep the default values for |net_error| and |is_success| (treat
-  // it as a net::ERR_ABORTED), and the fetch will be cancelled when
+  // it as a net::ERR_INVALID_REDIRECT), and the fetch will be cancelled when
   // pending_seed_request is reset.
   if (!was_redirect) {
     final_url_was_https =