Literal AtomicString construction can rely on strlen optimization.

third_party/WebKit/Source/core/svg/SVGTextContentElement.cpp

 /*
  * Copyright (C) 2004, 2005, 2007, 2008 Nikolas Zimmermann <zimmermann@kde.org>
  * Copyright (C) 2004, 2005, 2006, 2007, 2008 Rob Buis <buis@kde.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,
@@ skipping 192 matching lines @@
 bool SVGTextContentElement::isPresentationAttribute(const QualifiedName& name) const
 {
     if (name.matches(XMLNames::spaceAttr))
         return true;
     return SVGGraphicsElement::isPresentationAttribute(name);
 }
 
 void SVGTextContentElement::collectStyleForPresentationAttribute(const QualifiedName& name, const AtomicString& value, MutableStylePropertySet* style)
 {
     if (name.matches(XMLNames::spaceAttr)) {
-        DEFINE_STATIC_LOCAL(const AtomicString, preserveString, ("preserve", AtomicString::ConstructFromLiteral));
+        DEFINE_STATIC_LOCAL(const AtomicString, preserveString, ("preserve"));
 
         if (value == preserveString) {
             UseCounter::count(document(), UseCounter::WhiteSpacePreFromXMLSpace);
             addPropertyToPresentationAttributeStyle(style, CSSPropertyWhiteSpace, CSSValuePre);
         } else {
             UseCounter::count(document(), UseCounter::WhiteSpaceNowrapFromXMLSpace);
             addPropertyToPresentationAttributeStyle(style, CSSPropertyWhiteSpace, CSSValueNowrap);
         }
     } else {
         SVGGraphicsElement::collectStyleForPresentationAttribute(name, value, style);
@@ skipping 31 matching lines @@
 {
     if (!lineLayoutItem || (!lineLayoutItem.isSVGText() && !lineLayoutItem.isSVGInline()))
         return nullptr;
 
     SVGElement* element = toSVGElement(lineLayoutItem.node());
     ASSERT(element);
     return isSVGTextContentElement(*element) ? toSVGTextContentElement(element) : 0;
 }
 
 } // namespace blink