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

chrome/browser/net/sdch_dictionary_fetcher.h

Index: chrome/browser/net/sdch_dictionary_fetcher.h
diff --git a/chrome/browser/net/sdch_dictionary_fetcher.h b/chrome/browser/net/sdch_dictionary_fetcher.h
index 32bf0d7b5ca32528348852d0befe5129e3e1aead..0240245ae84447acc076e77d6d74a154913c7d72 100644
--- a/chrome/browser/net/sdch_dictionary_fetcher.h
+++ b/chrome/browser/net/sdch_dictionary_fetcher.h
@@ -1,4 +1,4 @@
-// Copyright (c) 2006-2008 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.
 
@@ -52,7 +52,7 @@ class SdchDictionaryFetcher : public URLFetcher::Delegate,
   // 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);