Fix paint and rect mapping issues for stacked float under stacked inline

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 8778e090b49c6ce94ff53a238e98e37b4aabf8c0..e02b48d3b0a5663e1a278fa803cbf79210457d43 100644
--- a/third_party/WebKit/Source/core/paint/PaintLayer.cpp
+++ b/third_party/WebKit/Source/core/paint/PaintLayer.cpp
@@ -921,8 +921,8 @@ 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() &&
-        !m_layoutObject->parent()->isLayoutBlockFlow())
-      return m_layoutObject->containingBlock()->enclosingLayer();
+        !m_layoutObject->parent()->canContainFloatingObject(*m_layoutObject))
+      return m_layoutObject->container()->enclosingLayer();
 
     return parent();
   }