Hooked up NetLog to DownloadItem, DownloadFile, and FileStream.

content/browser/download/download_resource_handler.cc

Index: content/browser/download/download_resource_handler.cc
diff --git a/content/browser/download/download_resource_handler.cc b/content/browser/download/download_resource_handler.cc
index 8915f2a2ecfc067b4bdd4a136c873bd0e883911e..28fb5fbf5387c082f9659b014035236e2b0a6d96 100644
--- a/content/browser/download/download_resource_handler.cc
+++ b/content/browser/download/download_resource_handler.cc
@@ -56,8 +56,22 @@ DownloadResourceHandler::DownloadResourceHandler(
       rdh_(rdh),
       is_paused_(false),
       last_buffer_size_(0),
-      bytes_read_(0) {
+      bytes_read_(0),
+      bound_net_log_(net::BoundNetLog::Make(request->net_log().net_log(),
+                                            net::NetLog::SOURCE_DOWNLOAD)) {
   download_stats::RecordDownloadCount(download_stats::UNTHROTTLED_COUNT);
+
+  bound_net_log_.AddEvent(
+      net::NetLog::TYPE_DOWNLOAD_URL_REQUEST,
+      make_scoped_refptr(new net::NetLogSourceParameter(
+          "source_dependency",
+          request->net_log().source())));
+
+  request->net_log().AddEvent(
+      net::NetLog::TYPE_DOWNLOAD_STARTED,
+      make_scoped_refptr(new net::NetLogSourceParameter(
+          "source_dependency",
+          bound_net_log_.source())));
 }
 
 bool DownloadResourceHandler::OnUploadProgress(int request_id,
@@ -98,7 +112,8 @@ bool DownloadResourceHandler::OnResponseStarted(
   // Deleted in DownloadManager.
   scoped_ptr<DownloadCreateInfo> info(new DownloadCreateInfo(FilePath(), GURL(),
       base::Time::Now(), 0, content_length_, DownloadItem::IN_PROGRESS,
-      request_info->has_user_gesture(), request_info->transition_type()));
+      bound_net_log_, request_info->has_user_gesture(),
+      request_info->transition_type()));
   info->url_chain = request_->url_chain();
   info->referrer_url = GURL(request_->referrer());
   info->start_time = base::Time::Now();