Call Element::rebuildLayoutTree from Document::updateStyle directly

third_party/WebKit/Source/core/dom/Element.h

Index: third_party/WebKit/Source/core/dom/Element.h
diff --git a/third_party/WebKit/Source/core/dom/Element.h b/third_party/WebKit/Source/core/dom/Element.h
index e2690fe9ff02dfaa8eeb833a46e4bf58eec57ae6..6ae08fe078cd1faad51234926b33ac668afab424 100644
--- a/third_party/WebKit/Source/core/dom/Element.h
+++ b/third_party/WebKit/Source/core/dom/Element.h
@@ -409,7 +409,7 @@ class CORE_EXPORT Element : public ContainerNode {
   virtual LayoutObject* createLayoutObject(const ComputedStyle&);
   virtual bool layoutObjectIsNeeded(const ComputedStyle&);
   void recalcStyle(StyleRecalcChange, Text* nextTextSibling = nullptr);
-  StyleRecalcChange rebuildLayoutTree();
+  void rebuildLayoutTree();
   void pseudoStateChanged(CSSSelector::PseudoType);
   void setAnimationStyleChange(bool);
   void clearAnimationStyleChange();
@@ -830,6 +830,8 @@ class CORE_EXPORT Element : public ContainerNode {
   PassRefPtr<ComputedStyle> propagateInheritedProperties(StyleRecalcChange);
 
   StyleRecalcChange recalcOwnStyle(StyleRecalcChange, Text*);
+  void reattachPseudoElementLayoutTree(PseudoId);
+  void rebuildShadowRootLayoutTree();
   inline void checkForEmptyStyleChange();
 
   void updatePseudoElement(PseudoId, StyleRecalcChange);