Move String::remove to StringImpl.

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 237 matching lines @@
 
     void fill(UChar c)
     {
         if (m_impl)
             m_impl = m_impl->fill(c);
     }
 
     void ensure16Bit();
 
     void truncate(unsigned len);
-    void remove(unsigned pos, int len = 1);
+    void remove(unsigned start, unsigned length = 1);
 
     String substring(unsigned pos, unsigned len = UINT_MAX) const;
     String left(unsigned len) const { return substring(0, len); }
     String right(unsigned len) const { return substring(length() - len, len); }
 
     // Returns a lowercase/uppercase version of the string
     String lower() const;
     String upper() const;
 
     String lower(const AtomicString& localeIdentifier) const;
@@ skipping 98 matching lines @@
 
 #ifndef NDEBUG
     void show() const;
 #endif
 
 private:
     typedef struct ImplicitConversionFromWTFStringToBoolDisallowed* (String::*UnspecifiedBoolType);
     operator UnspecifiedBoolType() const;
 
     template <typename CharacterType>
-    void removeInternal(const CharacterType*, unsigned, int);
-
-    template <typename CharacterType>
     void appendInternal(CharacterType);
 
     RefPtr<StringImpl> m_impl;
 };
 
 #undef DISPATCH_CASE_OP
 
 inline bool operator==(const String& a, const String& b) { return equal(a.impl(), b.impl()); }
 inline bool operator==(const String& a, const LChar* b) { return equal(a.impl(), b); }
 inline bool operator==(const String& a, const char* b) { return equal(a.impl(), reinterpret_cast<const LChar*>(b)); }
@@ skipping 191 matching lines @@
 using WTF::emptyString16Bit;
 using WTF::append;
 using WTF::charactersAreAllASCII;
 using WTF::equal;
 using WTF::find;
 using WTF::isAllSpecialCharacters;
 using WTF::isSpaceOrNewline;
 
 #include "wtf/text/AtomicString.h"
 #endif // WTFString_h