Literal AtomicString construction can rely on strlen optimization.

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

 /*
  * Copyright (C) 2012 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1.  Redistributions of source code must retain the above copyright
  *     notice, this list of conditions and the following disclaimer.
  * 2.  Redistributions in binary form must reproduce the above copyright
  *     notice, this list of conditions and the following disclaimer in the
@@ skipping 59 matching lines @@
     if (!element().document().isActive())
         return;
     DateTimeChooserParameters parameters;
     if (!element().setupDateTimeChooserParameters(parameters))
         return;
     m_dateTimeChooser = element().document().frameHost()->chromeClient().openDateTimeChooser(this, parameters);
 }
 
 void BaseChooserOnlyDateAndTimeInputType::createShadowSubtree()
 {
-    DEFINE_STATIC_LOCAL(AtomicString, valueContainerPseudo, ("-webkit-date-and-time-value", AtomicString::ConstructFromLiteral));
+    DEFINE_STATIC_LOCAL(AtomicString, valueContainerPseudo, ("-webkit-date-and-time-value"));
 
     RefPtrWillBeRawPtr<HTMLDivElement> valueContainer = HTMLDivElement::create(element().document());
     valueContainer->setShadowPseudoId(valueContainerPseudo);
     element().userAgentShadowRoot()->appendChild(valueContainer.get());
     updateView();
 }
 
 void BaseChooserOnlyDateAndTimeInputType::updateView()
 {
     Node* node = element().userAgentShadowRoot()->firstChild();
@@ skipping 69 matching lines @@
 }
 
 void BaseChooserOnlyDateAndTimeInputType::accessKeyAction(bool sendMouseEvents)
 {
     BaseDateAndTimeInputType::accessKeyAction(sendMouseEvents);
     BaseClickableWithKeyInputType::accessKeyAction(element(), sendMouseEvents);
 }
 
 }
 #endif