Make calls to AtomicString(const String&) explicit in dom/

Source/core/dom/Document.cpp

Index: Source/core/dom/Document.cpp
diff --git a/Source/core/dom/Document.cpp b/Source/core/dom/Document.cpp
index 2e9ebcf57b3a5d410e775ff3202f8586cbf684aa..5ec6b0a92ac571f8e46c401ce65f6b9f28869872 100644
--- a/Source/core/dom/Document.cpp
+++ b/Source/core/dom/Document.cpp
@@ -863,7 +863,7 @@ PassRefPtr<Node> Document::importNode(Node* importedNode, bool deep, ExceptionSt
         return newElement.release();
     }
     case ATTRIBUTE_NODE:
-        return Attr::create(*this, QualifiedName(nullAtom, toAttr(importedNode)->name(), nullAtom), toAttr(importedNode)->value());
+        return Attr::create(*this, QualifiedName(nullAtom, AtomicString(toAttr(importedNode)->name()), nullAtom), toAttr(importedNode)->value());
     case DOCUMENT_FRAGMENT_NODE: {
         if (importedNode->isShadowRoot()) {
             // ShadowRoot nodes should not be explicitly importable.
@@ -4168,7 +4168,7 @@ PassRefPtr<Attr> Document::createAttributeNS(const AtomicString& namespaceURI, c
         return 0;
     }
 
-    return Attr::create(*this, qName, emptyString());
+    return Attr::create(*this, qName, emptyAtom);
 }
 
 const SVGDocumentExtensions* Document::svgExtensions()