Literal AtomicString construction can rely on strlen optimization.

third_party/WebKit/Source/core/html/track/TextTrack.cpp

Index: third_party/WebKit/Source/core/html/track/TextTrack.cpp
diff --git a/third_party/WebKit/Source/core/html/track/TextTrack.cpp b/third_party/WebKit/Source/core/html/track/TextTrack.cpp
index 9cdcaf28748dca09798bd643ca72a4c90348001d..341a4ec7df4add1704bb83151b555593c427ea90 100644
--- a/third_party/WebKit/Source/core/html/track/TextTrack.cpp
+++ b/third_party/WebKit/Source/core/html/track/TextTrack.cpp
@@ -48,49 +48,49 @@ static const int invalidTrackIndex = -1;
 
 const AtomicString& TextTrack::subtitlesKeyword()
 {
-    DEFINE_STATIC_LOCAL(const AtomicString, subtitles, ("subtitles", AtomicString::ConstructFromLiteral));
+    DEFINE_STATIC_LOCAL(const AtomicString, subtitles, ("subtitles"));
     return subtitles;
 }
 
 const AtomicString& TextTrack::captionsKeyword()
 {
-    DEFINE_STATIC_LOCAL(const AtomicString, captions, ("captions", AtomicString::ConstructFromLiteral));
+    DEFINE_STATIC_LOCAL(const AtomicString, captions, ("captions"));
     return captions;
 }
 
 const AtomicString& TextTrack::descriptionsKeyword()
 {
-    DEFINE_STATIC_LOCAL(const AtomicString, descriptions, ("descriptions", AtomicString::ConstructFromLiteral));
+    DEFINE_STATIC_LOCAL(const AtomicString, descriptions, ("descriptions"));
     return descriptions;
 }
 
 const AtomicString& TextTrack::chaptersKeyword()
 {
-    DEFINE_STATIC_LOCAL(const AtomicString, chapters, ("chapters", AtomicString::ConstructFromLiteral));
+    DEFINE_STATIC_LOCAL(const AtomicString, chapters, ("chapters"));
     return chapters;
 }
 
 const AtomicString& TextTrack::metadataKeyword()
 {
-    DEFINE_STATIC_LOCAL(const AtomicString, metadata, ("metadata", AtomicString::ConstructFromLiteral));
+    DEFINE_STATIC_LOCAL(const AtomicString, metadata, ("metadata"));
     return metadata;
 }
 
 const AtomicString& TextTrack::disabledKeyword()
 {
-    DEFINE_STATIC_LOCAL(const AtomicString, open, ("disabled", AtomicString::ConstructFromLiteral));
+    DEFINE_STATIC_LOCAL(const AtomicString, open, ("disabled"));
     return open;
 }
 
 const AtomicString& TextTrack::hiddenKeyword()
 {
-    DEFINE_STATIC_LOCAL(const AtomicString, closed, ("hidden", AtomicString::ConstructFromLiteral));
+    DEFINE_STATIC_LOCAL(const AtomicString, closed, ("hidden"));
     return closed;
 }
 
 const AtomicString& TextTrack::showingKeyword()
 {
-    DEFINE_STATIC_LOCAL(const AtomicString, ended, ("showing", AtomicString::ConstructFromLiteral));
+    DEFINE_STATIC_LOCAL(const AtomicString, ended, ("showing"));
     return ended;
 }