Changed EPosition to an enum class and renamed its members

third_party/WebKit/Source/core/frame/FrameView.cpp

 /*
  * Copyright (C) 1998, 1999 Torben Weis <weis@kde.org>
  *                     1999 Lars Knoll <knoll@kde.org>
  *                     1999 Antti Koivisto <koivisto@kde.org>
  *                     2000 Dirk Mueller <mueller@kde.org>
  * Copyright (C) 2004, 2005, 2006, 2007, 2008 Apple Inc. All rights reserved.
  *           (C) 2006 Graham Dennis (graham.dennis@gmail.com)
  *           (C) 2006 Alexey Proskuryakov (ap@nypop.com)
  * Copyright (C) 2009 Google Inc. All rights reserved.
  *
@@ skipping 1936 matching lines @@
 
 void FrameView::updateLayersAndCompositingAfterScrollIfNeeded() {
   // Nothing to do after scrolling if there are no fixed position elements.
   if (!hasViewportConstrainedObjects())
     return;
 
   // Update sticky position objects which are stuck to the viewport.
   for (const auto& viewportConstrainedObject : *m_viewportConstrainedObjects) {
     LayoutObject* layoutObject = viewportConstrainedObject;
     PaintLayer* layer = toLayoutBoxModelObject(layoutObject)->layer();
-    if (layoutObject->style()->position() == StickyPosition) {
+    if (layoutObject->style()->position() == EPosition::kSticky) {
       // TODO(skobes): Resolve circular dependency between scroll offset and
       // compositing state, and remove this disabler. https://crbug.com/420741
       DisableCompositingQueryAsserts disabler;
       layer->updateLayerPositionsAfterOverflowScroll();
       layoutObject->setMayNeedPaintInvalidationSubtree();
     }
   }
 
   // If there fixed position elements, scrolling may cause compositing layers to
   // change.  Update widget and layer positions after scrolling, but only if
@@ skipping 2945 matching lines @@
   DCHECK(m_frame->isMainFrame());
   return m_initialViewportSize.height();
 }
 
 bool FrameView::hasVisibleSlowRepaintViewportConstrainedObjects() const {
   if (!viewportConstrainedObjects())
     return false;
 
   for (const LayoutObject* layoutObject : *viewportConstrainedObjects()) {
     DCHECK(layoutObject->isBoxModelObject() && layoutObject->hasLayer());
-    DCHECK(layoutObject->style()->position() == FixedPosition ||
-           layoutObject->style()->position() == StickyPosition);
+    DCHECK(layoutObject->style()->position() == EPosition::kFixed ||
+           layoutObject->style()->position() == EPosition::kSticky);
     PaintLayer* layer = toLayoutBoxModelObject(layoutObject)->layer();
 
     // Whether the Layer sticks to the viewport is a tree-depenent
     // property and our viewportConstrainedObjects collection is maintained
     // with only LayoutObject-level information.
     if (!layer->sticksToViewport())
       continue;
 
     // If the whole subtree is invisible, there's no reason to scroll on
     // the main thread because we don't need to generate invalidations
@@ skipping 233 matching lines @@
     std::unique_ptr<CompositorAnimationTimeline> timeline) {
   m_animationTimeline = std::move(timeline);
 }
 
 void FrameView::setAnimationHost(
     std::unique_ptr<CompositorAnimationHost> host) {
   m_animationHost = std::move(host);
 }
 
 }  // namespace blink