location.replace() breaks same-document back/forward navigations.

Source/core/loader/HistoryItem.cpp

Index: Source/core/loader/HistoryItem.cpp
diff --git a/Source/core/loader/HistoryItem.cpp b/Source/core/loader/HistoryItem.cpp
index e8e09d1f308a6e29eaceda3da4e9b461748739fc..179f361344d7286ab80f115d8c57ff448713ac46 100644
--- a/Source/core/loader/HistoryItem.cpp
+++ b/Source/core/loader/HistoryItem.cpp
@@ -53,9 +53,13 @@ HistoryItem::~HistoryItem()
 {
 }
 
-void HistoryItem::generateNewSequenceNumbers()
+void HistoryItem::generateNewItemSequenceNumber()
 {
     m_itemSequenceNumber = generateSequenceNumber();
+}
+
+void HistoryItem::generateNewDocumentSequenceNumber()
+{
     m_documentSequenceNumber = generateSequenceNumber();
 }