[Cleanup] Remove StringPrintf from global namespace

content/plugin/plugin_channel.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 "content/plugin/plugin_channel.h"
 
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/process_util.h"
 #include "base/string_util.h"
@@ skipping 125 matching lines @@
   typedef std::map<int, WaitableEventWrapper> ModalDialogEventMap;
   ModalDialogEventMap modal_dialog_event_map_;
   base::Lock modal_dialog_event_map_lock_;
 
   IPC::Channel* channel_;
 };
 
 PluginChannel* PluginChannel::GetPluginChannel(
     int renderer_id, base::MessageLoopProxy* ipc_message_loop) {
   // Map renderer ID to a (single) channel to that process.
-  std::string channel_key = StringPrintf(
+  std::string channel_key = base::StringPrintf(
       "%d.r%d", base::GetCurrentProcId(), renderer_id);
 
   PluginChannel* channel =
       static_cast<PluginChannel*>(NPChannelBase::GetChannel(
           channel_key,
           IPC::Channel::MODE_SERVER,
           ClassFactory,
           ipc_message_loop,
           false,
           ChildProcess::current()->GetShutDownEvent()));
@@ skipping 155 matching lines @@
                        : base::StringPrintf("\"%s\"", site_str);
       VLOG(1) << "NPP_ClearSiteData(" << site_name << ", " << flags << ", "
               << max_age << ") returned " << err;
       success = (err == NPERR_NO_ERROR);
     }
   }
   Send(new PluginHostMsg_ClearSiteDataResult(success));
 }
 
 }  // namespace content