Move String::remove to StringImpl.

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

 /*
  * (C) 1999 Lars Knoll (knoll@kde.org)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2010, 2012 Apple Inc. All rights reserved.
  * Copyright (C) 2007-2009 Torch Mobile, Inc.
  *
  * 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.
  *
@@ skipping 230 matching lines @@
         memcpy(data, m_impl->characters8(), position * sizeof(LChar));
         m_impl = newImpl.release();
     } else {
         UChar* data;
         RefPtr<StringImpl> newImpl = StringImpl::createUninitialized(position, data);
         memcpy(data, m_impl->characters16(), position * sizeof(UChar));
         m_impl = newImpl.release();
     }
 }
 
-template <typename CharacterType>
-inline void String::removeInternal(const CharacterType* characters, unsigned position, int lengthToRemove)
+void String::remove(unsigned start, unsigned lengthToRemove)
 {
-    CharacterType* data;
-    RefPtr<StringImpl> newImpl = StringImpl::createUninitialized(length() - lengthToRemove, data);
-    memcpy(data, characters, position * sizeof(CharacterType));
-    memcpy(data + position, characters + position + lengthToRemove,
-        (length() - lengthToRemove - position) * sizeof(CharacterType));
-
-    m_impl = newImpl.release();
-}
-
-void String::remove(unsigned position, int lengthToRemove)
-{
-    if (lengthToRemove <= 0)
-        return;
-    if (position >= length())
-        return;
-    if (static_cast<unsigned>(lengthToRemove) > length() - position)
-        lengthToRemove = length() - position;
-
-    if (is8Bit()) {
-        removeInternal(characters8(), position, lengthToRemove);
-
-        return;
-    }
-
-    removeInternal(characters16(), position, lengthToRemove);
+    if (m_impl)
+        m_impl = m_impl->remove(start, lengthToRemove);
 }
 
 String String::substring(unsigned pos, unsigned len) const
 {
     if (!m_impl)
         return String();
     return m_impl->substring(pos, len);
 }
 
 String String::lower() const
@@ skipping 647 matching lines @@
     buffer.append('\0');
     return buffer;
 }
 
 Vector<char> asciiDebug(String& string)
 {
     return asciiDebug(string.impl());
 }
 
 #endif