Literal AtomicString construction can rely on strlen optimization.

third_party/WebKit/Source/core/html/forms/FormController.cpp

 /*
  * Copyright (C) 2006, 2008, 2009, 2010 Apple Inc. All rights reserved.
  * Copyright (C) 2010, 2011, 2012 Google Inc. All rights reserved.
  *
  * 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,
@@ skipping 335 matching lines @@
         builder.append(actionURL.getString());
 
     recordFormStructure(form, builder);
     return builder.toString();
 }
 
 const AtomicString& FormKeyGenerator::formKey(const HTMLFormControlElementWithState& control)
 {
     HTMLFormElement* form = ownerFormForState(control);
     if (!form) {
-        DEFINE_STATIC_LOCAL(const AtomicString, formKeyForNoOwner, ("No owner", AtomicString::ConstructFromLiteral));
+        DEFINE_STATIC_LOCAL(const AtomicString, formKeyForNoOwner, ("No owner"));
         return formKeyForNoOwner;
     }
     FormToKeyMap::const_iterator it = m_formToKeyMap.find(form);
     if (it != m_formToKeyMap.end())
         return it->value;
 
     String signature = formSignature(*form);
     ASSERT(!signature.isNull());
     FormSignatureToNextIndexMap::AddResult result = m_formSignatureToNextIndexMap.add(signature, 0);
     unsigned nextIndex = result.storedValue->value++;
@@ skipping 191 matching lines @@
 {
     m_documentState->addControl(&control);
 }
 
 void FormController::unregisterStatefulFormControl(HTMLFormControlElementWithState& control)
 {
     m_documentState->removeControl(&control);
 }
 
 } // namespace blink