Remove StyleDifference::needsPaintPropertyUpdate()

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

 /*
  * Copyright (C) 1999 Antti Koivisto (koivisto@kde.org)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010 Apple Inc. All rights
  * reserved.
  * Copyright (C) 2011 Adobe Systems Incorporated. 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.
@@ skipping 568 matching lines @@
       diff.setNeedsPositionedMovementLayout();
   }
 
   if (diffNeedsPaintInvalidationSubtree(other))
     diff.setNeedsPaintInvalidationSubtree();
   else if (diffNeedsPaintInvalidationObject(other))
     diff.setNeedsPaintInvalidationObject();
 
   updatePropertySpecificDifferences(other, diff);
 
-  // The following conditions need to be at last, because they may depend on
+  // The following condition needs to be at last, because it may depend on
   // conditions in diff computed above.
   if (scrollAnchorDisablingPropertyChanged(other, diff))
     diff.setScrollAnchorDisablingPropertyChanged();
-  if (diffNeedsPaintPropertyUpdate(other, diff))
-    diff.setNeedsPaintPropertyUpdate();
 
   // Cursors are not checked, since they will be set appropriately in response
   // to mouse events, so they don't need to cause any paint invalidation or
   // layout.
 
   // Animations don't need to be checked either. We always set the new style on
   // the layoutObject, so we will get a chance to fire off the resulting
   // transition properly.
 
   return diff;
@@ skipping 520 matching lines @@
   }
 
   bool hasClip = hasOutOfFlowPosition() && !m_visual->hasAutoClip;
   bool otherHasClip =
       other.hasOutOfFlowPosition() && !other.m_visual->hasAutoClip;
   if (hasClip != otherHasClip ||
       (hasClip && m_visual->clip != other.m_visual->clip))
     diff.setCSSClipChanged();
 }
 
-bool ComputedStyle::diffNeedsPaintPropertyUpdate(
-    const ComputedStyle& other,
-    const StyleDifference& diff) const {
-  if (diff.transformChanged() || diff.opacityChanged() ||
-      diff.zIndexChanged() || diff.filterChanged() ||
-      diff.backdropFilterChanged() || diff.cssClipChanged())
-    return true;
-
-  return false;
-}
-
 void ComputedStyle::addPaintImage(StyleImage* image) {
   if (!m_rareNonInheritedData.access()->m_paintImages) {
     m_rareNonInheritedData.access()->m_paintImages =
         WTF::makeUnique<Vector<Persistent<StyleImage>>>();
   }
   m_rareNonInheritedData.access()->m_paintImages->append(image);
 }
 
 void ComputedStyle::addCursor(StyleImage* image,
                               bool hotSpotSpecified,
@@ skipping 1318 matching lines @@
     if (value < 0)
       fvalue -= 0.5f;
     else
       fvalue += 0.5f;
   }
 
   return roundForImpreciseConversion<int>(fvalue / zoomFactor);
 }
 
 }  // namespace blink