Fix asserts when updating shouldPaint for floating objects.

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 da5c63fe309570da68daae860020acb42a61f502..d50e0396f870cb1745b2265fde6fd1bd3400250a 100644
--- a/third_party/WebKit/Source/core/paint/PaintLayer.cpp
+++ b/third_party/WebKit/Source/core/paint/PaintLayer.cpp
@@ -1446,7 +1446,7 @@ void PaintLayer::didUpdateNeedsCompositedScrolling()
     // If the floating object becomes non-self-painting, so some ancestor should paint it;
     // if it becomes self-painting, it should paint itself and no ancestor should paint it.
     if (wasSelfPaintingLayer != isSelfPaintingLayer() && m_layoutObject->isFloating())
-        LayoutBlockFlow::setAncestorShouldPaintFloatingObject(*layoutBox(), wasSelfPaintingLayer);
+        LayoutBlockFlow::setAncestorShouldPaintFloatingObject(*layoutBox());
 }
 
 void PaintLayer::updateReflectionInfo(const ComputedStyle* oldStyle)