Do not cause unnecessary node lists invalidation on id/name attribute change

Source/core/dom/Document.h

Index: Source/core/dom/Document.h
diff --git a/Source/core/dom/Document.h b/Source/core/dom/Document.h
index 7d98dc56b77c828756dc905535848fdee6d2403b..89100152a7cb61a22bfd45f4af891c365aaabc3a 100644
--- a/Source/core/dom/Document.h
+++ b/Source/core/dom/Document.h
@@ -649,6 +649,8 @@ public:
 
     void registerNodeList(LiveNodeListBase*);
     void unregisterNodeList(LiveNodeListBase*);
+    void incrementNodeListWithIdNameCacheCount();
+    void decrementNodeListWithIdNameCacheCount();
     bool shouldInvalidateNodeListCaches(const QualifiedName* attrName = 0) const;
     void invalidateNodeListCaches(const QualifiedName* attrName);
 
@@ -1367,6 +1369,17 @@ inline bool Document::shouldOverrideLegacyDescription(ViewportDescription::Type
     return origin >= m_legacyViewportDescription.type;
 }
 
+inline void Document::incrementNodeListWithIdNameCacheCount()
+{
+    m_nodeListCounts[InvalidateOnIdNameAttrChange]++;
+}
+
+inline void Document::decrementNodeListWithIdNameCacheCount()
+{
+    ASSERT(m_nodeListCounts[InvalidateOnIdNameAttrChange] > 0);
+    m_nodeListCounts[InvalidateOnIdNameAttrChange]--;
+}
+
 DEFINE_TYPE_CASTS(Document, ExecutionContextClient, client, client->isDocument(), client.isDocument());
 DEFINE_TYPE_CASTS(Document, ExecutionContext, context, context->isDocument(), context.isDocument());
 DEFINE_NODE_TYPE_CASTS(Document, isDocumentNode());