Rename Node::attached() to confusingAndOftenMisusedAttached()

Source/core/loader/HistoryController.cpp

Index: Source/core/loader/HistoryController.cpp
diff --git a/Source/core/loader/HistoryController.cpp b/Source/core/loader/HistoryController.cpp
index be314f561283a5b91945add46ea19b200fa6b5ba..abd352ac2bbac677039d62cc1263709610d29a75 100644
--- a/Source/core/loader/HistoryController.cpp
+++ b/Source/core/loader/HistoryController.cpp
@@ -135,7 +135,7 @@ void HistoryController::saveDocumentState()
     Document* document = m_frame->document();
     ASSERT(document);
 
-    if (m_currentItem->isCurrentDocument(document) && document->attached()) {
+    if (m_currentItem->isCurrentDocument(document) && document->confusingAndOftenMisusedAttached()) {
         LOG(Loading, "WebCoreLoading %s: saving form state to %p", m_frame->tree()->uniqueName().string().utf8().data(), m_currentItem.get());
         m_currentItem->setDocumentState(document->formElementsState());
     }