Make PageSizeType an enum class.

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

 /*
  * Copyright (C) 1999 Antti Koivisto (koivisto@kde.org)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008 Apple Inc. All rights reserved.
  *
  * 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 82 matching lines @@
       visited_link_border_right_color_(StyleColor::CurrentColor()),
       visited_link_border_top_color_(StyleColor::CurrentColor()),
       visited_link_border_bottom_color_(StyleColor::CurrentColor()),
       variables_(ComputedStyle::InitialNonInheritedVariables()),
       align_content_(ComputedStyle::InitialContentAlignment()),
       align_items_(ComputedStyle::InitialDefaultAlignment()),
       align_self_(ComputedStyle::InitialSelfAlignment()),
       justify_content_(ComputedStyle::InitialContentAlignment()),
       justify_items_(ComputedStyle::InitialSelfAlignment()),
       justify_self_(ComputedStyle::InitialSelfAlignment()),
-      page_size_type_(PAGE_SIZE_AUTO),
+      page_size_type_(static_cast<unsigned>(PageSizeType::kAuto)),
       transform_style3d_(ComputedStyle::InitialTransformStyle3D()),
       backface_visibility_(ComputedStyle::InitialBackfaceVisibility()),
       user_drag(ComputedStyle::InitialUserDrag()),
       text_overflow(ComputedStyle::InitialTextOverflow()),
       margin_before_collapse(kMarginCollapseCollapse),
       margin_after_collapse(kMarginCollapseCollapse),
       appearance_(ComputedStyle::InitialAppearance()),
       text_decoration_style_(ComputedStyle::InitialTextDecorationStyle()),
       has_current_opacity_animation_(false),
       has_current_transform_animation_(false),
@@ skipping 173 matching lines @@
          requires_accelerated_compositing_for_external_reasons_ ==
              o.requires_accelerated_compositing_for_external_reasons_ &&
          has_inline_transform_ == o.has_inline_transform_ &&
          resize_ == o.resize_ &&
          has_compositor_proxy_ == o.has_compositor_proxy_ &&
          has_author_background_ == o.has_author_background_ &&
          has_author_border_ == o.has_author_border_;
 }
 
 }  // namespace blink