Remove StyleDifference::needsPaintPropertyUpdate()

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

Index: third_party/WebKit/Source/core/style/ComputedStyle.cpp
diff --git a/third_party/WebKit/Source/core/style/ComputedStyle.cpp b/third_party/WebKit/Source/core/style/ComputedStyle.cpp
index 4a7e19975a0dd0ec91583850d9788587bb995f55..d822d5bc0854174197215932566bfc13ff125bdf 100644
--- a/third_party/WebKit/Source/core/style/ComputedStyle.cpp
+++ b/third_party/WebKit/Source/core/style/ComputedStyle.cpp
@@ -586,12 +586,10 @@ StyleDifference ComputedStyle::visualInvalidationDiff(
 
   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
@@ -1132,17 +1130,6 @@ void ComputedStyle::updatePropertySpecificDifferences(
     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 =