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

chrome/browser/safe_browsing/protocol_manager.h

Index: chrome/browser/safe_browsing/protocol_manager.h
diff --git a/chrome/browser/safe_browsing/protocol_manager.h b/chrome/browser/safe_browsing/protocol_manager.h
index 173a49606da932bfbf1e44eef04d03c86daf922b..7205b53630c37e5769b334c63a5af02374fce78c 100644
--- a/chrome/browser/safe_browsing/protocol_manager.h
+++ b/chrome/browser/safe_browsing/protocol_manager.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.
 
@@ -27,7 +27,9 @@
 #include "chrome/browser/safe_browsing/safe_browsing_util.h"
 #include "chrome/common/net/url_fetcher.h"
 
+namespace net {
 class URLRequestStatus;
+}  // namespace net
 
 #if defined(COMPILER_GCC)
 // Allows us to use URLFetchers in a hash_map with gcc (MSVC is okay without
@@ -103,7 +105,7 @@ class SafeBrowsingProtocolManager : public URLFetcher::Delegate {
   // URLFetcher::Delegate interface.
   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);