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

third_party/WebKit/Source/core/css/CSSFontFace.h

 /*
  * Copyright (C) 2007, 2008 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 63 matching lines @@
   PassRefPtr<SimpleFontData> getFontData(const FontDescription&);
 
   FontFace::LoadStatusType loadStatus() const {
     return m_fontFace->loadStatus();
   }
   bool maybeLoadFont(const FontDescription&, const String&);
   bool maybeLoadFont(const FontDescription&, const FontDataForRangeSet&);
   void load();
   void load(const FontDescription&);
 
-  bool hadBlankText() { return isValid() && m_sources.first()->hadBlankText(); }
+  bool hadBlankText() { return isValid() && m_sources.front()->hadBlankText(); }
 
   DECLARE_TRACE();
 
  private:
   void setLoadStatus(FontFace::LoadStatusType);
 
   RefPtr<UnicodeRangeSet> m_ranges;
   Member<CSSSegmentedFontFace> m_segmentedFontFace;
   HeapDeque<Member<CSSFontFaceSource>> m_sources;
   Member<FontFace> m_fontFace;
 };
 
 }  // namespace blink
 
 #endif