Call Element::rebuildLayoutTree from Document::updateStyle directly

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

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2001 Dirk Mueller (mueller@kde.org)
  * Copyright (C) 2004-2011, 2014 Apple Inc. All rights reserved.
  * Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved.
  * (http://www.torchmobile.com/)
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
@@ skipping 376 matching lines @@
   // Note: As a shadow host whose root with delegatesFocus=false may become
   // focused state when an inner element gets focused, in that case more than
   // one elements in a document can return true for |isFocused()|.  Use
   // Element::isFocusedElementInDocument() or Document::focusedElement() to
   // check which element is exactly focused.
   bool isFocused() const {
     return isUserActionElement() && isUserActionElementFocused();
   }
 
   bool needsAttach() const {
-    return getStyleChangeType() == NeedsReattachStyleChange;
+    return getStyleChangeType() == NeedsReattachStyleChange ||
+           getFlag(NeedsReattachLayoutTree);
   }
   bool needsStyleRecalc() const {
     return getStyleChangeType() != NoStyleChange;
   }
   StyleChangeType getStyleChangeType() const {
     return static_cast<StyleChangeType>(m_nodeFlags & StyleChangeMask);
   }
   bool childNeedsStyleRecalc() const {
     return getFlag(ChildNeedsStyleRecalcFlag);
   }
@@ skipping 415 matching lines @@
 
     HasNameOrIsEditingTextFlag = 1 << 22,
     HasEventTargetDataFlag = 1 << 23,
 
     V0CustomElementFlag = 1 << 24,
     V0CustomElementUpgradedFlag = 1 << 25,
 
     NeedsReattachLayoutTree = 1 << 26,
     ChildNeedsReattachLayoutTree = 1 << 27,
 
-    DefaultNodeFlags = IsFinishedParsingChildrenFlag | NeedsReattachStyleChange
+    DefaultNodeFlags = IsFinishedParsingChildrenFlag |
+                       NeedsReattachStyleChange |
+                       NeedsReattachLayoutTree
   };
 
   // 4 bits remaining.
 
   bool getFlag(NodeFlags mask) const { return m_nodeFlags & mask; }
   void setFlag(bool f, NodeFlags mask) {
     m_nodeFlags = (m_nodeFlags & ~mask) | (-(int32_t)f & mask);
   }
   void setFlag(NodeFlags mask) { m_nodeFlags |= mask; }
   void clearFlag(NodeFlags mask) { m_nodeFlags &= ~mask; }
@@ skipping 176 matching lines @@
 }  // namespace blink
 
 #ifndef NDEBUG
 // Outside the WebCore namespace for ease of invocation from gdb.
 void showNode(const blink::Node*);
 void showTree(const blink::Node*);
 void showNodePath(const blink::Node*);
 #endif
 
 #endif  // Node_h