Remove use of void** from HttpResponseHeaders::EnumerateHeaderLines

mojo/services/network/url_loader_impl.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "mojo/services/network/url_loader_impl.h"
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <utility>
@@ skipping 59 matching lines @@
   response->url = String::From(url_request->url());
   response->site = GetSiteForURL(url_request->url()).spec();
 
   const net::HttpResponseHeaders* headers = url_request->response_headers();
   if (headers) {
     response->status_code = headers->response_code();
     response->status_line = headers->GetStatusLine();
 
     response->headers = Array<HttpHeaderPtr>::New(0);
     std::vector<String> header_lines;
-    void* iter = nullptr;
+    size_t iter = 0;
     std::string name, value;
     while (headers->EnumerateHeaderLines(&iter, &name, &value)) {
       HttpHeaderPtr header = HttpHeader::New();
       header->name = name;
       header->value = value;
       response->headers.push_back(std::move(header));
     }
   }
 
   std::string mime_type;
@@ skipping 326 matching lines @@
 
 void URLLoaderImpl::ListenForPeerClosed() {
   handle_watcher_.Start(response_body_stream_.get(),
                         MOJO_HANDLE_SIGNAL_PEER_CLOSED,
                         MOJO_DEADLINE_INDEFINITE,
                         base::Bind(&URLLoaderImpl::OnResponseBodyStreamClosed,
                                    base::Unretained(this)));
 }
 
 }  // namespace mojo