Literal AtomicString construction can rely on strlen optimization.

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

 /*
  * Copyright (C) 1999 Lars Knoll (knoll@kde.org)
  *           (C) 1999 Antti Koivisto (koivisto@kde.org)
  *           (C) 2001 Dirk Mueller (mueller@kde.org)
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All rights reserved.
  *           (C) 2006 Alexey Proskuryakov (ap@nypop.com)
  * Copyright (C) 2007 Samuel Weinig (sam@webkit.org)
  * Copyright (C) 2009, 2010, 2011, 2012 Google Inc. All rights reserved.
  * Copyright (C) 2012 Samsung Electronics. All rights reserved.
  *
@@ skipping 714 matching lines @@
     return QualifiedName::null();
 }
 
 bool InputType::supportsAutocapitalize() const
 {
     return false;
 }
 
 const AtomicString& InputType::defaultAutocapitalize() const
 {
-    DEFINE_STATIC_LOCAL(const AtomicString, none, ("none", AtomicString::ConstructFromLiteral));
+    DEFINE_STATIC_LOCAL(const AtomicString, none, ("none"));
     return none;
 }
 
 bool InputType::shouldAppearIndeterminate() const
 {
     return false;
 }
 
 bool InputType::supportsInputModeAttribute() const
 {
@@ skipping 227 matching lines @@
     return StepRange(stepBase, minimum, maximum, step, stepDescription);
 }
 
 void InputType::addWarningToConsole(const char* messageFormat, const String& value) const
 {
     element().document().addConsoleMessage(ConsoleMessage::create(RenderingMessageSource, WarningMessageLevel,
         String::format(messageFormat, JSONValue::quoteString(value).utf8().data())));
 }
 
 } // namespace blink