Handlify LookupSingleCharacterStringFromCode.

src/handles.cc

Index: src/handles.cc
diff --git a/src/handles.cc b/src/handles.cc
index b3052ad6a82fd635cdcac6d27db3aef1a282c410..7ed7c8e80f921ae7d49a54c276f0c9caa02375d3 100644
--- a/src/handles.cc
+++ b/src/handles.cc
@@ -179,15 +179,6 @@ Handle<Object> GetProperty(Handle<JSReceiver> obj,
 }
 
 
-Handle<String> LookupSingleCharacterStringFromCode(Isolate* isolate,
-                                                   uint32_t index) {
-  CALL_HEAP_FUNCTION(
-      isolate,
-      isolate->heap()->LookupSingleCharacterStringFromCode(index),
-      String);
-}
-
-
 // Wrappers for scripts are kept alive and cached in weak global
 // handles referred from foreign objects held by the scripts as long as
 // they are used. When they are not used anymore, the garbage