Improve handling of PaintInvalidationLayer (renamed to PaintInvalidationSubtree)

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 461 matching lines @@
     }
 
     if (!diff.needsFullLayout() && position() != StaticPosition && surround->offset != other.surround->offset) {
         // Optimize for the case where a positioned layer is moving but not changing size.
         if (dependenceOnContentHeightHasChanged(*this, other))
             diff.setNeedsFullLayout();
         else
             diff.setNeedsPositionedMovementLayout();
     }
 
-    if (diffNeedsPaintInvalidationLayer(other))
-        diff.setNeedsPaintInvalidationLayer();
+    if (diffNeedsPaintInvalidationSubtree(other))
+        diff.setNeedsPaintInvalidationSubtree();
     else if (diffNeedsPaintInvalidationObject(other))
         diff.setNeedsPaintInvalidationObject();
 
     updatePropertySpecificDifferences(other, diff);
 
     // 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.
@@ skipping 202 matching lines @@
             || rareNonInheritedData->m_justifySelf != other.rareNonInheritedData->m_justifySelf)
             return true;
 
         if (!RuntimeEnabledFeatures::cssBoxReflectFilterEnabled() && !rareNonInheritedData->reflectionDataEquivalent(*other.rareNonInheritedData.get()))
             return true;
     }
 
     return false;
 }
 
-bool ComputedStyle::diffNeedsPaintInvalidationLayer(const ComputedStyle& other) const
+bool ComputedStyle::diffNeedsPaintInvalidationSubtree(const ComputedStyle& other) const
 {
     if (position() != StaticPosition && (visual->clip != other.visual->clip || visual->hasAutoClip != other.visual->hasAutoClip))
         return true;
 
     if (rareNonInheritedData.get() != other.rareNonInheritedData.get()) {
         if (rareNonInheritedData->m_effectiveBlendMode != other.rareNonInheritedData->m_effectiveBlendMode
             || rareNonInheritedData->m_isolation != other.rareNonInheritedData->m_isolation)
             return true;
 
         if (rareNonInheritedData->m_mask != other.rareNonInheritedData->m_mask
@@ skipping 1089 matching lines @@
     if (!shadowList)
         return false;
     for (size_t i = shadowList->shadows().size(); i--; ) {
         if (shadowList->shadows()[i].color().isCurrentColor())
             return true;
     }
     return false;
 }
 
 } // namespace blink