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

Source/core/svg/SVGMPathElement.cpp

 /*
  * Copyright (C) 2007 Eric Seidel <eric@webkit.org>
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
  * License as published by the Free Software Foundation; either
  * version 2 of the License, or (at your option) any later version.
  *
  * This library is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
@@ skipping 43 matching lines @@
 {
     clearResourceReferences();
 }
 
 void SVGMPathElement::buildPendingResource()
 {
     clearResourceReferences();
     if (!inDocument())
         return;
 
-    String id;
+    AtomicString id;
     Element* target = SVGURIReference::targetElementFromIRIString(hrefCurrentValue(), document(), &id);
     if (!target) {
         // Do not register as pending if we are already pending this resource.
         if (document().accessSVGExtensions()->isElementPendingResource(this, id))
             return;
 
         if (!id.isEmpty()) {
             document().accessSVGExtensions()->addPendingResource(id, this);
             ASSERT(hasPendingResources());
         }
@@ skipping 85 matching lines @@
     notifyParentOfPathChange(parentNode());
 }
 
 void SVGMPathElement::notifyParentOfPathChange(ContainerNode* parent)
 {
     if (parent && parent->hasTagName(SVGNames::animateMotionTag))
         static_cast<SVGAnimateMotionElement*>(parent)->updateAnimationPath();
 }
 
 } // namespace WebCore