Changed EWhiteSpace to an enum class and renamed its members to keywords

third_party/WebKit/Source/core/layout/LayoutThemeMac.mm

 /*
  * Copyright (C) 2005, 2006, 2007, 2008, 2009 Apple Inc. All rights reserved.
  * Copyright (C) 2008, 2009 Google, 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.
  *
  * This library is distributed in the hope that it will be useful,
@@ skipping 700 matching lines @@
                                          Element* e) const {
   NSControlSize controlSize = controlSizeForFont(style);
 
   style.resetBorder();
   style.resetPadding();
 
   // Height is locked to auto.
   style.setHeight(Length(Auto));
 
   // White-space is locked to pre.
-  style.setWhiteSpace(PRE);
+  style.setWhiteSpace(EWhiteSpace::Pre);
 
   // Set the foreground color to black or gray when we have the aqua look.
   // Cast to RGB32 is to work around a compiler bug.
   style.setColor(e && !e->isDisabledFormControl()
                      ? static_cast<RGBA32>(Color::black)
                      : Color::darkGray);
 
   // Set the button's vertical size.
   setSizeFromFont(style, menuListButtonSizes());
 
@@ skipping 370 matching lines @@
 }
 
 bool LayoutThemeMac::shouldUseFallbackTheme(const ComputedStyle& style) const {
   ControlPart part = style.appearance();
   if (part == CheckboxPart || part == RadioPart)
     return style.effectiveZoom() != 1;
   return false;
 }
 
 }  // namespace blink