Literal AtomicString construction can rely on strlen optimization.

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

Index: third_party/WebKit/Source/core/html/track/AudioTrack.cpp
diff --git a/third_party/WebKit/Source/core/html/track/AudioTrack.cpp b/third_party/WebKit/Source/core/html/track/AudioTrack.cpp
index 9a987dc8d002e8c343efe79c7483f89da1bbeee1..9ff0b88271ab5d6b4cd800aa29e73a9feeeb4f34 100644
--- a/third_party/WebKit/Source/core/html/track/AudioTrack.cpp
+++ b/third_party/WebKit/Source/core/html/track/AudioTrack.cpp
@@ -37,37 +37,37 @@ void AudioTrack::setEnabled(bool enabled)
 
 const AtomicString& AudioTrack::alternativeKeyword()
 {
-    DEFINE_STATIC_LOCAL(const AtomicString, keyword, ("alternative", AtomicString::ConstructFromLiteral));
+    DEFINE_STATIC_LOCAL(const AtomicString, keyword, ("alternative"));
     return keyword;
 }
 
 const AtomicString& AudioTrack::descriptionsKeyword()
 {
-    DEFINE_STATIC_LOCAL(const AtomicString, keyword, ("descriptions", AtomicString::ConstructFromLiteral));
+    DEFINE_STATIC_LOCAL(const AtomicString, keyword, ("descriptions"));
     return keyword;
 }
 
 const AtomicString& AudioTrack::mainKeyword()
 {
-    DEFINE_STATIC_LOCAL(const AtomicString, keyword, ("main", AtomicString::ConstructFromLiteral));
+    DEFINE_STATIC_LOCAL(const AtomicString, keyword, ("main"));
     return keyword;
 }
 
 const AtomicString& AudioTrack::mainDescriptionsKeyword()
 {
-    DEFINE_STATIC_LOCAL(const AtomicString, keyword, ("main-desc", AtomicString::ConstructFromLiteral));
+    DEFINE_STATIC_LOCAL(const AtomicString, keyword, ("main-desc"));
     return keyword;
 }
 
 const AtomicString& AudioTrack::translationKeyword()
 {
-    DEFINE_STATIC_LOCAL(const AtomicString, keyword, ("translation", AtomicString::ConstructFromLiteral));
+    DEFINE_STATIC_LOCAL(const AtomicString, keyword, ("translation"));
     return keyword;
 }
 
 const AtomicString& AudioTrack::commentaryKeyword()
 {
-    DEFINE_STATIC_LOCAL(const AtomicString, keyword, ("commentary", AtomicString::ConstructFromLiteral));
+    DEFINE_STATIC_LOCAL(const AtomicString, keyword, ("commentary"));
     return keyword;
 }