Make PageSizeType an enum class.

third_party/WebKit/Source/core/style/StyleRareNonInheritedData.h

 /*
  * Copyright (C) 2000 Lars Knoll (knoll@kde.org)
  *           (C) 2000 Antti Koivisto (koivisto@kde.org)
  *           (C) 2000 Dirk Mueller (mueller@kde.org)
  * Copyright (C) 2003, 2005, 2006, 2007, 2008 Apple Inc. All rights reserved.
  * 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 48 matching lines @@
 class StyleGridData;
 class StyleGridItemData;
 class StyleMultiColData;
 class StyleNonInheritedVariables;
 class StyleReflection;
 class StyleTransformData;
 class StyleWillChangeData;
 
 // Page size type.
 // StyleRareNonInheritedData::page_size_ is meaningful only when
-// StyleRareNonInheritedData::page_size_type_ is PAGE_SIZE_RESOLVED.
-enum PageSizeType {
-  PAGE_SIZE_AUTO,            // size: auto
-  PAGE_SIZE_AUTO_LANDSCAPE,  // size: landscape
-  PAGE_SIZE_AUTO_PORTRAIT,   // size: portrait
-  PAGE_SIZE_RESOLVED         // Size is fully resolved.
+// StyleRareNonInheritedData::page_size_type_ is kResolved.
+enum class PageSizeType {
+  kAuto,       // size: auto
+  kLandscape,  // size: landscape
+  kPortrait,   // size: portrait
+  kResolved    // Size is fully resolved.
 };
 
 // This struct is for rarely used non-inherited CSS3, CSS2, and WebKit-specific
 // properties.  By grouping them together, we save space, and only allocate this
 // object when someone actually uses one of these properties.
 // TODO(sashab): Move this into a private class on ComputedStyle, and remove
 // all methods on it, merging them into copy/creation methods on ComputedStyle
 // instead. Keep the allocation logic, only allocating a new object if needed.
 class CORE_EXPORT StyleRareNonInheritedData
     : public RefCounted<StyleRareNonInheritedData> {
@@ skipping 143 matching lines @@
   unsigned has_author_border_ : 1;  // Whether there is a author-defined border.
 
  private:
   StyleRareNonInheritedData();
   StyleRareNonInheritedData(const StyleRareNonInheritedData&);
 };
 
 }  // namespace blink
 
 #endif  // StyleRareNonInheritedData_h