Literal AtomicString construction can rely on strlen optimization.

third_party/WebKit/Source/wtf/text/StringStatics.cpp

 /*
  * Copyright (C) 2010 Apple 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 72 matching lines @@
     unsigned length = charactersCount - 1;
     unsigned hash = StringHasher::computeHashAndMaskTop8Bits(reinterpret_cast<const LChar*>(characters), length);
     return adoptRef(StringImpl::createStatic(characters, length, hash));
 }
 
 void StringStatics::init()
 {
     ASSERT(isMainThread());
 
     // FIXME: These should be allocated at compile time.
-    new (NotNull, (void*)&starAtom) AtomicString("*", AtomicString::ConstructFromLiteral);
+    new (NotNull, (void*)&starAtom) AtomicString("*");
     new (NotNull, (void*)&xmlAtom) AtomicString(addStaticASCIILiteral("xml"));
     new (NotNull, (void*)&xmlnsAtom) AtomicString(addStaticASCIILiteral("xmlns"));
     new (NotNull, (void*)&xlinkAtom) AtomicString(addStaticASCIILiteral("xlink"));
     new (NotNull, (void*)&xmlnsWithColon) String("xmlns:");
 }
 
 } // namespace WTF