Rename isTreatedAsOrStackingContext to isStacked

third_party/WebKit/Source/core/layout/LayoutBoxModelObject.cpp

Index: third_party/WebKit/Source/core/layout/LayoutBoxModelObject.cpp
diff --git a/third_party/WebKit/Source/core/layout/LayoutBoxModelObject.cpp b/third_party/WebKit/Source/core/layout/LayoutBoxModelObject.cpp
index d862aeb1dc14389067679e89239e7487a9450612..7a80368e25b3c0aa554df317a7e41727ee68a28f 100644
--- a/third_party/WebKit/Source/core/layout/LayoutBoxModelObject.cpp
+++ b/third_party/WebKit/Source/core/layout/LayoutBoxModelObject.cpp
@@ -296,10 +296,10 @@ void LayoutBoxModelObject::styleDidChange(StyleDifference diff, const ComputedSt
 void LayoutBoxModelObject::createLayer(PaintLayerType type)
 {
     // If the current paint invalidation container is not a stacking context and this object is
-    // a or treated as a stacking context, creating this layer may cause this object and its
+    // a stacked content, creating this layer may cause this object and its

[pdr., 2016/03/16 02:22:53]

Nit: "... and this object is stacked content, ..."

[Xianzhu, 2016/03/16 18:10:24]

Done.

     // descendants to change paint invalidation container. Therefore we must eagerly invalidate
     // them on the original paint invalidation container before creating the layer.
-    if (!RuntimeEnabledFeatures::slimmingPaintV2Enabled() && isRooted() && styleRef().isTreatedAsOrStackingContext()) {
+    if (!RuntimeEnabledFeatures::slimmingPaintV2Enabled() && isRooted() && PaintLayerStackingNode::shouldStackObject(*this)) {
         const LayoutBoxModelObject& currentPaintInvalidationContainer = containerForPaintInvalidation();
         if (!currentPaintInvalidationContainer.styleRef().isStackingContext())
             invalidatePaintIncludingNonSelfPaintingLayerDescendants(currentPaintInvalidationContainer);