URLLoader: add some temporary debug aliases.

Bug: 893971
Change-Id: I9340eef7af2d6c414dcc3d9ce2d3829f2a5cfaaf
Reviewed-on: https://chromium-review.googlesource.com/c/1298296
Commit-Queue: Maks Orlovich <morlovich@chromium.org>
Reviewed-by: Matt Menke <mmenke@chromium.org>
Cr-Commit-Position: refs/heads/master@{#602500}

services/network/url_loader.cc

@@ -9,6 +9,7 @@
 #include <utility>
 #include <vector>
 
+#include "base/debug/alias.h"
 #include "base/files/file.h"
 #include "base/memory/weak_ptr.h"
 #include "base/metrics/histogram_macros.h"
@@ -695,6 +696,14 @@ void URLLoader::OnResponseStarted(net::URLRequest* url_request, int net_error) {
     raw_response_headers_ = nullptr;
   }
 
+  // Save some info for debugging. Temporary for https://crbug.com/893971
+  int32_t annotation_hash =
+      url_request_->traffic_annotation().unique_id_hash_code;
+  size_t num_running_requests = url_request_context_->url_requests()->size();
+  base::debug::Alias(&annotation_hash);
+  base::debug::Alias(&num_running_requests);
+  DEBUG_ALIAS_FOR_GURL(url_buf, url_request_->url());
+
   mojo::DataPipe data_pipe(kDefaultAllocationSize);
   response_body_stream_ = std::move(data_pipe.producer_handle);
   consumer_handle_ = std::move(data_pipe.consumer_handle);