Hooked up NetLog to DownloadItem, DownloadFile, and FileStream.

content/browser/download/download_file_impl.h

Index: content/browser/download/download_file_impl.h
diff --git a/content/browser/download/download_file_impl.h b/content/browser/download/download_file_impl.h
index 67eb057e455f6907670d17624c8334eb5fad8b95..e49e3a2233118cf1fed1a4126b436374b6b14474 100644
--- a/content/browser/download/download_file_impl.h
+++ b/content/browser/download/download_file_impl.h
@@ -21,10 +21,12 @@ class DownloadManager;
 class CONTENT_EXPORT DownloadFileImpl : virtual public content::DownloadFile {
  public:
   // Takes ownership of the object pointed to by |request_handle|.
+  // |bound_net_log| will be used for logging the download file's events.
   DownloadFileImpl(const DownloadCreateInfo* info,
                    DownloadRequestHandleInterface* request_handle,
                    content::DownloadManager* download_manager,
-                   bool calculate_hash);
+                   bool calculate_hash,
+                   const net::BoundNetLog& bound_net_log);
   virtual ~DownloadFileImpl();
 
   // DownloadFile functions.