Changed ComputedStyle's EVisibility to be an enum class and fixed naming

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

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 2000 Simon Hausmann <hausmann@kde.org>
  *           (C) 2000 Stefan Schimanski (1Stein@gmx.de)
  * Copyright (C) 2004, 2005, 2006, 2009 Apple Inc. All rights reserved.
  * Copyright (C) Research In Motion Limited 2011. 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
@@ skipping 211 matching lines @@
     LayoutReplaced::styleDidChange(diff, oldStyle);
     Widget* widget = this->widget();
 
     if (!widget)
         return;
 
     // If the iframe has custom scrollbars, recalculate their style.
     if (widget && widget->isFrameView())
         toFrameView(widget)->recalculateCustomScrollbarStyle();
 
-    if (style()->visibility() != VISIBLE) {
+    if (style()->visibility() != EVisibility::Visible) {
         widget->hide();
     } else {
         widget->show();
     }
 }
 
 void LayoutPart::layout()
 {
     ASSERT(needsLayout());
     LayoutAnalyzer::Scope analyzer(*this);
@@ skipping 35 matching lines @@
     Widget* widget = this->widget();
     if (!widget)
         return;
 
     if (!style())
         return;
 
     if (!needsLayout())
         updateWidgetGeometryInternal();
 
-    if (style()->visibility() != VISIBLE) {
+    if (style()->visibility() != EVisibility::Visible) {
         widget->hide();
     } else {
         widget->show();
         // FIXME: Why do we issue a full paint invalidation in this case, but not the other?
         setShouldDoFullPaintInvalidation();
     }
 }
 
 void LayoutPart::updateWidgetGeometry()
 {
@@ skipping 59 matching lines @@
 
 bool LayoutPart::isThrottledFrameView() const
 {
     if (!widget() || !widget()->isFrameView())
         return false;
     const FrameView* frameView = toFrameView(widget());
     return frameView->shouldThrottleRendering();
 }
 
 } // namespace blink