Move Singleton and related structs to namespace base

chrome/browser/speech/tts_android.cc

 // Copyright (c) 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 "chrome/browser/speech/tts_android.h"
 
 #include <string>
 
 #include "base/android/jni_string.h"
 #include "base/memory/singleton.h"
@@ skipping 118 matching lines @@
     return;
 
   TtsController::GetInstance()->OnTtsEvent(
       utterance_id_, event_type, char_index, std::string());
   utterance_id_ = 0;
   utterance_.clear();
 }
 
 // static
 TtsPlatformImplAndroid* TtsPlatformImplAndroid::GetInstance() {
-  return Singleton<TtsPlatformImplAndroid,
-                   LeakySingletonTraits<TtsPlatformImplAndroid> >::get();
+  return base::Singleton<
+      TtsPlatformImplAndroid,
+      base::LeakySingletonTraits<TtsPlatformImplAndroid>>::get();
 }
 
 // static
 bool TtsPlatformImplAndroid::Register(JNIEnv* env) {
   return RegisterNativesImpl(env);
 }