Literal AtomicString construction can rely on strlen optimization.

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

 /*
  * Copyright (C) 2004, 2005, 2006, 2007, 2008 Nikolas Zimmermann <zimmermann@kde.org>
  * Copyright (C) 2004, 2005, 2006, 2007 Rob Buis <buis@kde.org>
  * Copyright (C) Research In Motion Limited 2009-2010. All rights reserved.
  * Copyright (C) 2011 Torch Mobile (Beijing) Co. Ltd. All rights reserved.
  * Copyright (C) 2012 University of Szeged
  * Copyright (C) 2012 Renata Hodovan <reni@webkit.org>
  *
  * This library is free software; you can redistribute it and/or
  * modify it under the terms of the GNU Library General Public
@@ skipping 132 matching lines @@
 {
     // Gracefully handle error condition.
     if (!resourceIsValid())
         return nullptr;
     ASSERT(m_resource->document());
     return m_resource->document();
 }
 
 static void transferUseWidthAndHeightIfNeeded(const SVGUseElement& use, SVGElement& shadowElement, const SVGElement& originalElement)
 {
-    DEFINE_STATIC_LOCAL(const AtomicString, hundredPercentString, ("100%", AtomicString::ConstructFromLiteral));
+    DEFINE_STATIC_LOCAL(const AtomicString, hundredPercentString, ("100%"));
     // Use |originalElement| for checking the element type, because we will
     // have replaced a <symbol> with an <svg> in the instance tree.
     if (isSVGSymbolElement(originalElement)) {
         // Spec (<use> on <symbol>): This generated 'svg' will always have
         // explicit values for attributes width and height.  If attributes
         // width and/or height are provided on the 'use' element, then these
         // attributes will be transferred to the generated 'svg'. If attributes
         // width and/or height are not specified, the generated 'svg' element
         // will use values of 100% for these attributes.
         shadowElement.setAttribute(SVGNames::widthAttr,
@@ skipping 587 matching lines @@
 
     if (m_resource)
         m_resource->removeClient(this);
 
     m_resource = resource;
     if (m_resource)
         m_resource->addClient(this);
 }
 
 } // namespace blink