String replaceWithLiteral should just use strlen, also rename to replace.

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

 /*
  * (C) 1999 Lars Knoll (knoll@kde.org)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2012, 2013 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,
@@ skipping 302 matching lines @@
             m_impl = m_impl->replace(a.impl(), b.impl());
         return *this;
     }
     String& replace(unsigned index, unsigned len, const String& b)
     {
         if (m_impl)
             m_impl = m_impl->replace(index, len, b.impl());
         return *this;
     }
 
-    template<unsigned charactersCount>
-    ALWAYS_INLINE String& replaceWithLiteral(UChar a, const char (&characters)[charactersCount])
+    ALWAYS_INLINE String& replace(UChar a, const char* characters)
     {
+        ASSERT(characters);
         if (m_impl)
-            m_impl = m_impl->replace(a, characters, charactersCount - 1);
-
+            m_impl = m_impl->replace(a, characters, strlen(characters));
         return *this;
     }
 
     void fill(UChar c)
     {
         if (m_impl)
             m_impl = m_impl->fill(c);
     }
 
     void ensure16Bit();
@@ skipping 366 matching lines @@
 using WTF::charactersToFloat;
 using WTF::equal;
 using WTF::equalIgnoringCase;
 using WTF::find;
 using WTF::isAllSpecialCharacters;
 using WTF::isSpaceOrNewline;
 using WTF::reverseFind;
 
 #include "wtf/text/AtomicString.h"
 #endif // WTFString_h