Update some uses of UTF conversions in chrome/browser to use the base:: namespace.

chrome/browser/speech/tts_win.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 <math.h>
 #include <sapi.h>
 
 #include "base/memory/singleton.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/strings/utf_string_conversions.h"
@@ skipping 89 matching lines @@
     suffix = L"</pitch>";
   }
 
   if (params.volume >= 0.0) {
     // The TTS api allows a range of 0 to 100 for speech volume.
     speech_synthesizer_->SetVolume(static_cast<uint16>(params.volume * 100));
   }
 
   // TODO(dmazzoni): convert SSML to SAPI xml. http://crbug.com/88072
 
-  utterance_ = UTF8ToWide(src_utterance);
+  utterance_ = base::UTF8ToWide(src_utterance);
   utterance_id_ = utterance_id;
   char_position_ = 0;
   std::wstring merged_utterance = prefix + utterance_ + suffix;
   prefix_len_ = prefix.size();
 
   HRESULT result = speech_synthesizer_->Speak(
       merged_utterance.c_str(),
       SPF_ASYNC,
       &stream_number_);
   return (result == S_OK);
@@ skipping 127 matching lines @@
 TtsPlatformImplWin* TtsPlatformImplWin::GetInstance() {
   return Singleton<TtsPlatformImplWin,
                    LeakySingletonTraits<TtsPlatformImplWin> >::get();
 }
 
 // static
 void TtsPlatformImplWin::SpeechEventCallback(
     WPARAM w_param, LPARAM l_param) {
   GetInstance()->OnSpeechEvent();
 }