Call Element::rebuildLayoutTree from Document::updateStyle directly

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

Index: third_party/WebKit/Source/core/dom/Node.h
diff --git a/third_party/WebKit/Source/core/dom/Node.h b/third_party/WebKit/Source/core/dom/Node.h
index 63b03b0e72c7376796755b27a995dab40d6ba065..96331dd9bf230de7d808ce4aaaef39aed2019d76 100644
--- a/third_party/WebKit/Source/core/dom/Node.h
+++ b/third_party/WebKit/Source/core/dom/Node.h
@@ -830,7 +830,9 @@ class CORE_EXPORT Node : public EventTarget {
     NeedsReattachLayoutTree = 1 << 26,
     ChildNeedsReattachLayoutTree = 1 << 27,
 
-    DefaultNodeFlags = IsFinishedParsingChildrenFlag | NeedsReattachStyleChange
+    DefaultNodeFlags = IsFinishedParsingChildrenFlag |
+                       NeedsReattachStyleChange |
+                       NeedsReattachLayoutTree
   };
 
   // 4 bits remaining.
@@ -853,8 +855,9 @@ class CORE_EXPORT Node : public EventTarget {
   enum ConstructionType {
     CreateOther = DefaultNodeFlags,
     CreateText = DefaultNodeFlags | IsTextFlag,
-    CreateContainer =
-        DefaultNodeFlags | ChildNeedsStyleRecalcFlag | IsContainerFlag,
+    CreateContainer = DefaultNodeFlags | ChildNeedsStyleRecalcFlag |
+                      ChildNeedsReattachLayoutTree |
+                      IsContainerFlag,
     CreateElement = CreateContainer | IsElementFlag,
     CreateShadowRoot =
         CreateContainer | IsDocumentFragmentFlag | IsInShadowTreeFlag,
@@ -974,6 +977,7 @@ inline void Node::lazyReattachIfAttached() {
 
   detachLayoutTree(context);
   markAncestorsWithChildNeedsStyleRecalc();
+  markAncestorsWithChildNeedsReattachLayoutTree();
 }
 
 inline bool Node::shouldCallRecalcStyle(StyleRecalcChange change) {