Literal AtomicString construction can rely on strlen optimization.

third_party/WebKit/Source/core/css/FontFaceSet.cpp

 /*
  * Copyright (C) 2013 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 141 matching lines @@
     return EventTargetNames::FontFaceSet;
 }
 
 ExecutionContext* FontFaceSet::getExecutionContext() const
 {
     return ActiveDOMObject::getExecutionContext();
 }
 
 AtomicString FontFaceSet::status() const
 {
-    DEFINE_STATIC_LOCAL(AtomicString, loading, ("loading", AtomicString::ConstructFromLiteral));
-    DEFINE_STATIC_LOCAL(AtomicString, loaded, ("loaded", AtomicString::ConstructFromLiteral));
+    DEFINE_STATIC_LOCAL(AtomicString, loading, ("loading"));
+    DEFINE_STATIC_LOCAL(AtomicString, loaded, ("loaded"));
     return m_isLoading ? loading : loaded;
 }
 
 void FontFaceSet::handlePendingEventsAndPromisesSoon()
 {
     // m_asyncRunner will be automatically stopped on destruction.
     m_asyncRunner->runAsync();
 }
 
 void FontFaceSet::didLayout()
@@ skipping 371 matching lines @@
     visitor->trace(m_failedFonts);
     visitor->trace(m_nonCSSConnectedFaces);
     visitor->trace(m_asyncRunner);
     HeapSupplement<Document>::trace(visitor);
 #endif
     EventTargetWithInlineData::trace(visitor);
     ActiveDOMObject::trace(visitor);
 }
 
 } // namespace blink