net: Add namespace net to the remaining files under url_request directory.

chrome/browser/renderer_host/download_resource_handler.h

Index: chrome/browser/renderer_host/download_resource_handler.h
diff --git a/chrome/browser/renderer_host/download_resource_handler.h b/chrome/browser/renderer_host/download_resource_handler.h
index 5a66f66248a29de172bfac2d8cf4dfb1153baa2f..bc269898a064fc8397c483b3d57daff414abc749 100644
--- a/chrome/browser/renderer_host/download_resource_handler.h
+++ b/chrome/browser/renderer_host/download_resource_handler.h
@@ -1,4 +1,4 @@
-// Copyright (c) 2010 The Chromium Authors. All rights reserved.
+// Copyright (c) 2011 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.
 
@@ -56,7 +56,7 @@ class DownloadResourceHandler : public ResourceHandler,
   virtual bool OnReadCompleted(int request_id, int* bytes_read);
 
   virtual bool OnResponseCompleted(int request_id,
-                                   const URLRequestStatus& status,
+                                   const net::URLRequestStatus& status,
                                    const std::string& security_info);
   virtual void OnRequestClosed();