Make net and ipc explicitly use the base namespace for Values.

net/base/file_stream_net_log_parameters.cc

 // Copyright (c) 2012 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 "net/base/file_stream_net_log_parameters.h"
 
 #include "base/values.h"
 
 namespace net {
 
 base::Value* NetLogFileStreamErrorCallback(
     FileErrorSource source,
     int os_error,
     net::Error net_error,
     NetLog::LogLevel /* log_level */) {
-  DictionaryValue* dict = new DictionaryValue();
+  base::DictionaryValue* dict = new base::DictionaryValue();
 
   dict->SetString("operation", GetFileErrorSourceName(source));
   dict->SetInteger("os_error", os_error);
   dict->SetInteger("net_error", net_error);
 
   return dict;
 }
 
 }  // namespace net