Revert of Move JoinString to the base namespace

content/child/websocket_bridge.cc

 // Copyright 2013 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 "content/child/websocket_bridge.h"
 
 #include <stdint.h>
 #include <string>
 #include <utility>
 #include <vector>
@@ skipping 202 matching lines @@
       ChildThreadImpl::current()->websocket_dispatcher();
   channel_id_ = dispatcher->AddBridge(this);
   client_ = client;
 
   std::vector<std::string> protocols_to_pass;
   for (size_t i = 0; i < protocols.size(); ++i)
     protocols_to_pass.push_back(protocols[i].utf8());
   url::DeprecatedSerializedOrigin origin_to_pass(origin);
 
   DVLOG(1) << "Bridge#" << channel_id_ << " Connect(" << url << ", ("
-           << base::JoinString(protocols_to_pass, ", ") << "), "
+           << JoinString(protocols_to_pass, ", ") << "), "
            << origin_to_pass.string() << ")";
 
   ChildThreadImpl::current()->Send(new WebSocketHostMsg_AddChannelRequest(
       channel_id_, url, protocols_to_pass, origin_to_pass, render_frame_id_));
 }
 
 void WebSocketBridge::send(bool fin,
                            WebSocketHandle::MessageType type,
                            const char* data,
                            size_t size) {
@@ skipping 52 matching lines @@
     return;
   WebSocketDispatcher* dispatcher =
       ChildThreadImpl::current()->websocket_dispatcher();
   dispatcher->RemoveBridge(channel_id_);
 
   channel_id_ = kInvalidChannelId;
   client_ = NULL;
 }
 
 }  // namespace content