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

chrome/browser/plugin_download_helper.cc

-// 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.
 
 #include "chrome/browser/plugin_download_helper.h"
 
 #if defined(OS_WIN)
 #include <windows.h>
 
 #include "base/file_util.h"
 #include "chrome/browser/net/url_request_tracking.h"
@@ skipping 15 matching lines @@
 }
 
 PluginDownloadUrlHelper::~PluginDownloadUrlHelper() {
   if (download_file_request_) {
     delete download_file_request_;
     download_file_request_ = NULL;
   }
 }
 
 void PluginDownloadUrlHelper::InitiateDownload(
-    URLRequestContext* request_context) {
+    net::URLRequestContext* request_context) {
   download_file_request_ = new net::URLRequest(GURL(download_url_), this);
   chrome_browser_net::SetOriginProcessUniqueIDForRequest(
       download_source_child_unique_id_, download_file_request_);
   download_file_request_->set_context(request_context);
   download_file_request_->Start();
 }
 
 void PluginDownloadUrlHelper::OnAuthRequired(
     net::URLRequest* request,
     net::AuthChallengeInfo* auth_info) {
@@ skipping 133 matching lines @@
 
   // Don't access any members after this.
   delete this;
 }
 
 #endif  // OS_WIN