Migrate WTF::Deque::first() to ::front()

third_party/WebKit/Source/modules/speech/SpeechSynthesis.cpp

 /*
  * Copyright (C) 2013 Apple Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
@@ skipping 209 matching lines @@
     PlatformSpeechSynthesisUtterance* utterance) {
   if (utterance->client())
     handleSpeakingCompleted(
         static_cast<SpeechSynthesisUtterance*>(utterance->client()), true);
 }
 
 SpeechSynthesisUtterance* SpeechSynthesis::currentSpeechUtterance() const {
   if (m_utteranceQueue.isEmpty())
     return nullptr;
 
-  return m_utteranceQueue.first();
+  return m_utteranceQueue.front();
 }
 
 const AtomicString& SpeechSynthesis::interfaceName() const {
   return EventTargetNames::SpeechSynthesis;
 }
 
 DEFINE_TRACE(SpeechSynthesis) {
   visitor->trace(m_platformSpeechSynthesizer);
   visitor->trace(m_voiceList);
   visitor->trace(m_utteranceQueue);
   PlatformSpeechSynthesizerClient::trace(visitor);
   ContextClient::trace(visitor);
   EventTargetWithInlineData::trace(visitor);
 }
 
 }  // namespace blink