Node::lazyAttach shouldn't lie about being attached

Source/core/dom/shadow/ShadowRoot.cpp

Index: Source/core/dom/shadow/ShadowRoot.cpp
diff --git a/Source/core/dom/shadow/ShadowRoot.cpp b/Source/core/dom/shadow/ShadowRoot.cpp
index 06189b27216ea289b53758d72bdaf218a040e7bb..fcf17567dd4be791c54bc3fef5220cd24cd6b8cd 100644
--- a/Source/core/dom/shadow/ShadowRoot.cpp
+++ b/Source/core/dom/shadow/ShadowRoot.cpp
@@ -142,6 +142,12 @@ void ShadowRoot::recalcStyle(StyleChange change)
     StyleResolver* styleResolver = document()->styleResolver();
     styleResolver->pushParentShadowRoot(this);
 
+    // When we're set to lazyAttach we'll have a FullStyleChange and we'll need
+    // to promote the change to a Force for all our descendants so they get a
+    // recalc and will attach.
+    if (styleChangeType() == FullStyleChange)
+        change = Force;
+
     for (Node* child = firstChild(); child; child = child->nextSibling()) {
         if (child->isElementNode())
             toElement(child)->recalcStyle(change);