Don't use cached subsequence when clip changes

third_party/WebKit/Source/core/paint/PaintLayerPainter.cpp

Index: third_party/WebKit/Source/core/paint/PaintLayerPainter.cpp
diff --git a/third_party/WebKit/Source/core/paint/PaintLayerPainter.cpp b/third_party/WebKit/Source/core/paint/PaintLayerPainter.cpp
index 71cd3e2c0ad0d0cc35f8595ea3ea9e767f3473ef..87791f0202be5002e81e1e36a7b23b707ea661dc 100644
--- a/third_party/WebKit/Source/core/paint/PaintLayerPainter.cpp
+++ b/third_party/WebKit/Source/core/paint/PaintLayerPainter.cpp
@@ -221,8 +221,7 @@ PaintLayerPainter::PaintResult PaintLayerPainter::paintLayerContents(GraphicsCon
     m_paintLayer.stackingNode()->updateLayerListsIfNeeded();
 
     Optional<SubsequenceRecorder> subsequenceRecorder;
-    if (!paintingInfoArg.disableSubsequenceCache
-        && !context->printing()
+    if (!context->printing()
         && !(paintingInfoArg.globalPaintFlags() & GlobalPaintFlattenCompositingLayers)
         && !(paintFlags & (PaintLayerPaintingReflection | PaintLayerPaintingRootBackgroundOnly | PaintLayerPaintingOverlayScrollbars))
         && m_paintLayer.stackingNode()->isStackingContext()
@@ -236,15 +235,6 @@ PaintLayerPainter::PaintResult PaintLayerPainter::paintLayerContents(GraphicsCon
 
     PaintLayerPaintingInfo paintingInfo = paintingInfoArg;
 
-    // This is a workaround of ancestor clip change issue (crbug.com/533717).
-    // TODO(wangxianzhu):
-    // - spv1: This disables subsequence cache for all descendants of LayoutView with root-layer-scrolls because
-    //   LayoutView has overflow clip. Should find another workaround method working with root-layer-scrolls
-    //   if it ships before slimming paint v2. crbug.com/552030.
-    // - spv2: Ensure subsequence cache works with ancestor clip change. crbug.com/536138.
-    if (!RuntimeEnabledFeatures::slimmingPaintV2Enabled() && m_paintLayer.layoutObject()->hasClipOrOverflowClip())
-        paintingInfo.disableSubsequenceCache = true;
-
     LayoutPoint offsetFromRoot;
     m_paintLayer.convertToLayerCoords(paintingInfo.rootLayer, offsetFromRoot);