Get rid of the overloads on templated traversal methods for clarity and safety

Source/core/dom/StyleEngine.cpp

Index: Source/core/dom/StyleEngine.cpp
diff --git a/Source/core/dom/StyleEngine.cpp b/Source/core/dom/StyleEngine.cpp
index 328777a4c0f6135f4391f76cd2748f1b5126c789..920fd54a9d3fe181c17bdb714900e4bb18d73aff 100644
--- a/Source/core/dom/StyleEngine.cpp
+++ b/Source/core/dom/StyleEngine.cpp
@@ -340,7 +340,7 @@ void StyleEngine::collectDocumentActiveStyleSheets(StyleSheetCollectionBase& col
     ASSERT(isMaster());
 
     if (HTMLImport* rootImport = m_document.import()) {
-        for (HTMLImport* import = traverseFirstPostOrder(*rootImport); import; import = traverseNextPostOrder(*import)) {
+        for (HTMLImport* import = traverseFirstPostOrder<HTMLImport>(*rootImport); import; import = traverseNextPostOrder<HTMLImport>(*import)) {
             Document* document = import->document();
             if (!document)
                 continue;