Set NeedsReattachLayoutTree and ChildNeedsReattachLayoutTree flags on Node

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

Index: third_party/WebKit/Source/core/dom/Node.cpp
diff --git a/third_party/WebKit/Source/core/dom/Node.cpp b/third_party/WebKit/Source/core/dom/Node.cpp
index a22173fd57d4a64eb69c6c2349f24d5ca289a1a9..40a09a43e28784060dc5dcbc07c8deba9b4b3c98 100644
--- a/third_party/WebKit/Source/core/dom/Node.cpp
+++ b/third_party/WebKit/Source/core/dom/Node.cpp
@@ -692,9 +692,20 @@ void Node::markAncestorsWithChildNeedsStyleRecalc() {
   for (ContainerNode* p = parentOrShadowHostNode();
        p && !p->childNeedsStyleRecalc(); p = p->parentOrShadowHostNode())
     p->setChildNeedsStyleRecalc();
+  // TODO(nainar): Move this to Node::markAncestorsWithChildNeedsReattachLayoutTree()
   document().scheduleLayoutTreeUpdateIfNeeded();
 }
 
+void Node::markAncestorsWithChildNeedsReattachLayoutTree() {
+  for (ContainerNode* p = parentOrShadowHostNode();
+       p && !p->childNeedsReattachLayoutTree(); p = p->parentOrShadowHostNode())
+    p->setChildNeedsReattachLayoutTree();
+}
+void Node::setNeedsReattachLayoutTree() {
+  setFlag(NeedsReattachLayoutTree);
+  markAncestorsWithChildNeedsReattachLayoutTree();
+}
+
 void Node::setNeedsStyleRecalc(StyleChangeType changeType,
                                const StyleChangeReasonForTracing& reason) {
   DCHECK(changeType != NoStyleChange);
@@ -886,6 +897,7 @@ void Node::attachLayoutTree(const AttachContext&) {
           (layoutObject()->parent() || layoutObject()->isLayoutView())));
 
   clearNeedsStyleRecalc();
+  clearNeedsReattachLayoutTree();
 
   if (AXObjectCache* cache = document().axObjectCache())
     cache->updateCacheAfterNodeIsAttached(this);