Hooked up NetLog to DownloadItem, DownloadFile, and FileStream.

content/public/browser/download_manager.h

Index: content/public/browser/download_manager.h
diff --git a/content/public/browser/download_manager.h b/content/public/browser/download_manager.h
index 52a5437b9044c8a4a205f06702c475ef9aed3428..6969ef00cd1902ffbb96430a5914b4804e8752c9 100644
--- a/content/public/browser/download_manager.h
+++ b/content/public/browser/download_manager.h
@@ -51,6 +51,10 @@ struct DownloadCreateInfo;
 struct DownloadRetrieveInfo;
 struct DownloadSaveInfo;
 
+namespace net {
+class NetLog;
+}  // namespace net
+
 namespace content {
 class BrowserContext;
 class DownloadManagerDelegate;
@@ -64,7 +68,8 @@ class CONTENT_EXPORT DownloadManager
   virtual ~DownloadManager() {}
 
   static DownloadManager* Create(
-      DownloadManagerDelegate* delegate);
+      DownloadManagerDelegate* delegate,
+      net::NetLog* net_log);
 
   // Shutdown the download manager. Must be called before destruction.
   virtual void Shutdown() = 0;