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

chrome/browser/metrics/metrics_service.h

Index: chrome/browser/metrics/metrics_service.h
diff --git a/chrome/browser/metrics/metrics_service.h b/chrome/browser/metrics/metrics_service.h
index fa15a128fdb1b8035b5219b1c96bb4b372cb8d18..a4bee9454334ed4d94a3aa36e0385ab7daaa286b 100644
--- a/chrome/browser/metrics/metrics_service.h
+++ b/chrome/browser/metrics/metrics_service.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.
 
@@ -274,7 +274,7 @@ class MetricsService : public NotificationObserver,
   // completes (either successfully or with failure).
   virtual void OnURLFetchComplete(const URLFetcher* source,
                                   const GURL& url,
-                                  const URLRequestStatus& status,
+                                  const net::URLRequestStatus& status,
                                   int response_code,
                                   const ResponseCookies& cookies,
                                   const std::string& data);