Literal AtomicString construction can rely on strlen optimization.

third_party/WebKit/Source/modules/mediasource/MediaSource.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:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 51 matching lines @@
     if (isUpdating) {
         MediaSource::logAndThrowDOMException(exceptionState, InvalidStateError, "The 'updating' attribute is true on one or more of this MediaSource's SourceBuffers.");
         return true;
     }
 
     return false;
 }
 
 const AtomicString& MediaSource::openKeyword()
 {
-    DEFINE_STATIC_LOCAL(const AtomicString, open, ("open", AtomicString::ConstructFromLiteral));
+    DEFINE_STATIC_LOCAL(const AtomicString, open, ("open"));
     return open;
 }
 
 const AtomicString& MediaSource::closedKeyword()
 {
-    DEFINE_STATIC_LOCAL(const AtomicString, closed, ("closed", AtomicString::ConstructFromLiteral));
+    DEFINE_STATIC_LOCAL(const AtomicString, closed, ("closed"));
     return closed;
 }
 
 const AtomicString& MediaSource::endedKeyword()
 {
-    DEFINE_STATIC_LOCAL(const AtomicString, ended, ("ended", AtomicString::ConstructFromLiteral));
+    DEFINE_STATIC_LOCAL(const AtomicString, ended, ("ended"));
     return ended;
 }
 
 MediaSource* MediaSource::create(ExecutionContext* context)
 {
     MediaSource* mediaSource = new MediaSource(context);
     mediaSource->suspendIfNeeded();
     return mediaSource;
 }
 
@@ skipping 363 matching lines @@
     if (oldState == state)
         return;
 
     m_readyState = state;
 
     onReadyStateChange(oldState, state);
 }
 
 void MediaSource::endOfStream(const AtomicString& error, ExceptionState& exceptionState)
 {
-    DEFINE_STATIC_LOCAL(const AtomicString, network, ("network", AtomicString::ConstructFromLiteral));
-    DEFINE_STATIC_LOCAL(const AtomicString, decode, ("decode", AtomicString::ConstructFromLiteral));
+    DEFINE_STATIC_LOCAL(const AtomicString, network, ("network"));
+    DEFINE_STATIC_LOCAL(const AtomicString, decode, ("decode"));
 
     if (error == network) {
         endOfStreamInternal(WebMediaSource::EndOfStreamStatusNetworkError, exceptionState);
     } else if (error == decode) {
         endOfStreamInternal(WebMediaSource::EndOfStreamStatusDecodeError, exceptionState);
     } else {
         ASSERT_NOT_REACHED(); // IDL enforcement should prevent this case.
     }
 }
 
@@ skipping 136 matching lines @@
 
     m_asyncEventQueue->enqueueEvent(event.release());
 }
 
 URLRegistry& MediaSource::registry() const
 {
     return MediaSourceRegistry::registry();
 }
 
 } // namespace blink