Add "Unicode" suffixes to some functions of WTF::String and WTF::StringImpl.

third_party/WebKit/Source/platform/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 255 matching lines @@
 
 String String::Substring(unsigned pos, unsigned len) const {
   if (!impl_)
     return String();
   return impl_->Substring(pos, len);
 }
 
 String String::DeprecatedLower() const {
   if (!impl_)
     return String();
-  return impl_->Lower();
+  return impl_->LowerUnicode();
 }
 
 String String::DeprecatedUpper() const {
   if (!impl_)
     return String();
-  return impl_->Upper();
+  return impl_->UpperUnicode();
 }
 
-String String::Lower(const AtomicString& locale_identifier) const {
+String String::LowerUnicode(const AtomicString& locale_identifier) const {
   if (!impl_)
     return String();
-  return impl_->Lower(locale_identifier);
+  return impl_->LowerUnicode(locale_identifier);
 }
 
-String String::Upper(const AtomicString& locale_identifier) const {
+String String::UpperUnicode(const AtomicString& locale_identifier) const {
   if (!impl_)
     return String();
-  return impl_->Upper(locale_identifier);
+  return impl_->UpperUnicode(locale_identifier);
 }
 
 String String::UpperASCII() const {
   if (!impl_)
     return String();
   return impl_->UpperASCII();
 }
 
 String String::StripWhiteSpace() const {
   if (!impl_)
@@ skipping 519 matching lines @@
   return out << '"';
 }
 
 #ifndef NDEBUG
 void String::Show() const {
   DataLogF("%s\n", AsciiDebug(Impl()).Data());
 }
 #endif
 
 }  // namespace WTF