Revert 157422 "Remove lots of code related synchronously attaching"

Source/core/dom/Element.cpp

Index: Source/core/dom/Element.cpp
diff --git a/Source/core/dom/Element.cpp b/Source/core/dom/Element.cpp
index 527588ec6479904569634411922fa6941f0d4835..6cb67b9fa1bd8983a19a7548382bfb5bcafcd199 100644
--- a/Source/core/dom/Element.cpp
+++ b/Source/core/dom/Element.cpp
@@ -1324,6 +1324,10 @@ void Element::attach(const AttachContext& context)
             data->resetStyleState();
     }
 
+    // FIXME: Remove this once we lazyAttach everywhere.
+    if (!document().inStyleRecalc() && (this == document().documentElement() || this == document().body()))
+        document().setNeedsStyleRecalc(LocalStyleChange);
+
     NodeRenderingContext(this, context.resolvedStyle).createRendererForElementIfNeeded();
 
     createPseudoElementIfNeeded(BEFORE);
@@ -1349,7 +1353,11 @@ void Element::attach(const AttachContext& context)
         }
     }
 
-    InspectorInstrumentation::didRecalculateStyleForElement(this);
+    // FIXME: It doesn't appear safe to call didRecalculateStyleForElement when
+    // not in a Document::recalcStyle. Since we're hopefully going to always
+    // lazyAttach in the future that problem should go away.
+    if (document().inStyleRecalc())
+        InspectorInstrumentation::didRecalculateStyleForElement(this);
 }
 
 void Element::unregisterNamedFlowContentNode()
@@ -1758,12 +1766,18 @@ void Element::removeAllEventListeners()
 void Element::beginParsingChildren()
 {
     clearIsParsingChildrenFinished();
+    StyleResolver* styleResolver = document().styleResolverIfExists();
+    if (styleResolver && attached())
+        styleResolver->pushParentElement(this);
 }
 
 void Element::finishParsingChildren()
 {
+    ContainerNode::finishParsingChildren();
     setIsParsingChildrenFinished();
     checkForSiblingStyleChanges(this, renderStyle(), true, lastChild(), 0, 0);
+    if (StyleResolver* styleResolver = document().styleResolverIfExists())
+        styleResolver->popParentElement(this);
     if (isCustomElement())
         CustomElement::didFinishParsingChildren(this);
 }