Fix compositingContainer for stacked inlines.

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

Index: third_party/WebKit/Source/core/paint/PaintLayer.cpp
diff --git a/third_party/WebKit/Source/core/paint/PaintLayer.cpp b/third_party/WebKit/Source/core/paint/PaintLayer.cpp
index 77b9cddafecb866ce990f62ccc2089e1fa3b3102..00c1890e0905df62e1ef965b3eee15a654e92def 100644
--- a/third_party/WebKit/Source/core/paint/PaintLayer.cpp
+++ b/third_party/WebKit/Source/core/paint/PaintLayer.cpp
@@ -920,8 +920,10 @@ PaintLayer* PaintLayer::compositingContainer() const {
   // Floats have special painting order, which has complicated semantics.
   // See the comments around FloatObject::setShouldPaint.
   if (m_layoutObject->isFloating() && m_layoutObject->parent() &&
+      !stackingNode()->isStacked() &&

[Xianzhu, 2017/01/19 21:50:02]

Nit: How about combining the two stackingNode()->isStacked() conditions at line
923 and line 927?

       !m_layoutObject->parent()->isLayoutBlockFlow())
     return m_layoutObject->containingBlock()->enclosingLayer();
+
   if (!stackingNode()->isStacked())
     return parent();
   if (PaintLayerStackingNode* ancestorStackingNode =