Use StringView for String::reverseFind.

third_party/WebKit/Source/wtf/text/AtomicString.h

 /*
  * Copyright (C) 2004, 2005, 2006, 2008 Apple Inc. All rights reserved.
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
  *
  * This library is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
@@ skipping 72 matching lines @@
         { return m_string.find(matchFunction, start); }
 
     // Find substrings.
     size_t find(const StringView& value, unsigned start = 0, TextCaseSensitivity caseSensitivity = TextCaseSensitive) const
         { return m_string.find(value, start, caseSensitivity); }
 
     bool contains(char c) const { return find(c) != kNotFound; }
     bool contains(const StringView& value, TextCaseSensitivity caseSensitivity = TextCaseSensitive) const
         { return find(value, 0, caseSensitivity) != kNotFound; }
 
+    // Find the last instance of a single character or string.
+    size_t reverseFind(UChar c, unsigned start = UINT_MAX) const
+        { return m_string.reverseFind(c, start); }
+    size_t reverseFind(const StringView& value, unsigned start = UINT_MAX) const
+        { return m_string.reverseFind(value, start); }
+
     bool startsWith(const StringView& prefix, TextCaseSensitivity caseSensitivity = TextCaseSensitive) const
         { return m_string.startsWith(prefix, caseSensitivity); }
     bool startsWith(UChar character) const
         { return m_string.startsWith(character); }
 
     bool endsWith(const StringView& suffix, TextCaseSensitivity caseSensitivity = TextCaseSensitive) const
         { return m_string.endsWith(suffix, caseSensitivity); }
     bool endsWith(UChar character) const
         { return m_string.endsWith(character); }
 
@@ skipping 104 matching lines @@
 using WTF::AtomicString;
 using WTF::nullAtom;
 using WTF::emptyAtom;
 using WTF::starAtom;
 using WTF::xmlAtom;
 using WTF::xmlnsAtom;
 using WTF::xlinkAtom;
 
 #include "wtf/text/StringConcatenate.h"
 #endif // AtomicString_h