net: Append base:: in the StringPrintf calls.

net/websockets/websocket_net_log_params.h

 // Copyright (c) 2010 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.
 
 #ifndef NET_WEBSOCKETS_WEBSOCKET_NET_LOG_PARAMS_H_
 #define NET_WEBSOCKETS_WEBSOCKET_NET_LOG_PARAMS_H_
 #pragma once
 
 #include <string>
 #include <vector>
 
 #include "base/basictypes.h"
 #include "base/ref_counted.h"
 #include "base/string_split.h"
 #include "base/string_util.h"
+#include "base/stringprintf.h"
 #include "base/values.h"
 #include "net/base/net_log.h"
 
 namespace net {
 
 class NetLogWebSocketHandshakeParameter : public NetLog::EventParameters {
  public:
   explicit NetLogWebSocketHandshakeParameter(const std::string& headers)
       : headers_(headers) {
   }
 
   Value* ToValue() const {
     DictionaryValue* dict = new DictionaryValue();
     ListValue* headers = new ListValue();
     std::vector<std::string> lines;
     base::SplitStringDontTrim(headers_, '\n', &lines);
     for (size_t i = 0; i < lines.size(); ++i) {
       if (lines[i] == "\r") {
         headers->Append(new StringValue(""));
         // Dump WebSocket key3
         std::string key;
         i = i + 1;
         for (; i < lines.size(); ++i) {
           for (size_t j = 0; j < lines[i].length(); ++j) {
-            key += StringPrintf("\\x%02x", lines[i][j] & 0xff);
+            key += base::StringPrintf("\\x%02x", lines[i][j] & 0xff);
           }
           key += "\\x0a";
         }
         headers->Append(new StringValue(key));
         break;
       }
       std::string line = lines[i];
       if (line.length() > 0 && line[line.length() - 1] == '\r')
         line = line.substr(0, line.length() - 1);
       headers->Append(new StringValue(line));
     }
     dict->Set("headers", headers);
     return dict;
   }
 
  private:
   ~NetLogWebSocketHandshakeParameter() {}
 
   const std::string headers_;
 
   DISALLOW_COPY_AND_ASSIGN(NetLogWebSocketHandshakeParameter);
 };
 
 }  // namespace net
 
 #endif  // NET_WEBSOCKETS_WEBSOCKET_NET_LOG_PARAMS_H_