Literal AtomicString construction can rely on strlen optimization.

third_party/WebKit/Source/modules/presentation/PresentationConnection.cpp

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "modules/presentation/PresentationConnection.h"
 
 #include "bindings/core/v8/ScriptPromiseResolver.h"
 #include "core/dom/DOMArrayBuffer.h"
 #include "core/dom/DOMArrayBufferView.h"
 #include "core/dom/Document.h"
@@ skipping 27 matching lines @@
 
     Document* document = toDocument(executionContext);
     if (!document->frame())
         return nullptr;
     PresentationController* controller = PresentationController::from(*document->frame());
     return controller ? controller->client() : nullptr;
 }
 
 const AtomicString& connectionStateToString(WebPresentationConnectionState state)
 {
-    DEFINE_STATIC_LOCAL(const AtomicString, connectedValue, ("connected", AtomicString::ConstructFromLiteral));
-    DEFINE_STATIC_LOCAL(const AtomicString, closedValue, ("closed", AtomicString::ConstructFromLiteral));
-    DEFINE_STATIC_LOCAL(const AtomicString, terminatedValue, ("terminated", AtomicString::ConstructFromLiteral));
+    DEFINE_STATIC_LOCAL(const AtomicString, connectedValue, ("connected"));
+    DEFINE_STATIC_LOCAL(const AtomicString, closedValue, ("closed"));
+    DEFINE_STATIC_LOCAL(const AtomicString, terminatedValue, ("terminated"));
 
     switch (state) {
     case WebPresentationConnectionState::Connected:
         return connectedValue;
     case WebPresentationConnectionState::Closed:
         return closedValue;
     case WebPresentationConnectionState::Terminated:
         return terminatedValue;
     }
 
     ASSERT_NOT_REACHED();
     return terminatedValue;
 }
 
 const AtomicString& connectionCloseReasonToString(WebPresentationConnectionCloseReason reason)
 {
-    DEFINE_STATIC_LOCAL(const AtomicString, errorValue, ("error", AtomicString::ConstructFromLiteral));
-    DEFINE_STATIC_LOCAL(const AtomicString, closedValue, ("closed", AtomicString::ConstructFromLiteral));
-    DEFINE_STATIC_LOCAL(const AtomicString, wentAwayValue, ("wentaway", AtomicString::ConstructFromLiteral));
+    DEFINE_STATIC_LOCAL(const AtomicString, errorValue, ("error"));
+    DEFINE_STATIC_LOCAL(const AtomicString, closedValue, ("closed"));
+    DEFINE_STATIC_LOCAL(const AtomicString, wentAwayValue, ("wentaway"));
 
     switch (reason) {
     case WebPresentationConnectionCloseReason::Error:
         return errorValue;
     case WebPresentationConnectionCloseReason::Closed:
         return closedValue;
     case WebPresentationConnectionCloseReason::WentAway:
         return wentAwayValue;
     }
 
@@ skipping 348 matching lines @@
         m_blobLoader->cancel();
         m_blobLoader.clear();
     }
 
     // Clear message queue.
     Deque<OwnPtr<Message>> empty;
     m_messages.swap(empty);
 }
 
 } // namespace blink