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

third_party/WebKit/Source/core/layout/LayoutText.cpp

 /*
  * (C) 1999 Lars Knoll (knoll@kde.org)
  * (C) 2000 Dirk Mueller (mueller@kde.org)
  * Copyright (C) 2004, 2005, 2006, 2007 Apple Inc. All rights reserved.
  * Copyright (C) 2006 Andrew Wellington (proton@wiretapped.net)
  * Copyright (C) 2006 Graham Dennis (graham.dennis@gmail.com)
  *
  * 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
@@ skipping 1702 matching lines @@
   if (!style)
     return;
 
   switch (style->TextTransform()) {
     case ETextTransform::kNone:
       break;
     case ETextTransform::kCapitalize:
       MakeCapitalized(&text, previous_character);
       break;
     case ETextTransform::kUppercase:
-      text = text.Upper(style->Locale());
+      text = text.UpperUnicode(style->Locale());
       break;
     case ETextTransform::kLowercase:
-      text = text.Lower(style->Locale());
+      text = text.LowerUnicode(style->Locale());
       break;
   }
 }
 
 void LayoutText::SetTextInternal(PassRefPtr<StringImpl> text) {
   DCHECK(text);
   text_ = std::move(text);
 
   if (Style()) {
     ApplyTextTransform(Style(), text_, PreviousCharacter());
@@ skipping 375 matching lines @@
   LayoutRect rect = LayoutRect(
       IntRect(FirstRunX(), FirstRunY(), lines_box.Width(), lines_box.Height()));
   LayoutBlock* block = ContainingBlock();
   if (block && HasTextBoxes())
     block->AdjustChildDebugRect(rect);
 
   return rect;
 }
 
 }  // namespace blink