Remove use of void** from HttpResponseHeaders::EnumerateHeaderLines

net/url_request/url_request_http_job.cc

Index: net/url_request/url_request_http_job.cc
diff --git a/net/url_request/url_request_http_job.cc b/net/url_request/url_request_http_job.cc
index 47a0666e3fc7ad50225110e7f394da8adf08c83c..67aa3707cbb0c180b4702563fe34e537446446ce 100644
--- a/net/url_request/url_request_http_job.cc
+++ b/net/url_request/url_request_http_job.cc
@@ -948,7 +948,7 @@ void URLRequestHttpJob::OnStartCompleted(int result) {
     scoped_refptr<HttpResponseHeaders> headers = GetResponseHeaders();
 
     if (headers) {
-      void* iter = NULL;
+      size_t iter = 0;
       std::string name;
       std::string value;
       bool invalid_header_values_in_rfc7230 = false;