Add function literal variable to declaration list.

src/x64/full-codegen-x64.cc

Index: src/x64/full-codegen-x64.cc
diff --git a/src/x64/full-codegen-x64.cc b/src/x64/full-codegen-x64.cc
index d6c3428998679d0cab8c23fc9f0b8af358457dbb..36a7eed1f98a92044d7a79795b4e7b2ba12fc4ea 100644
--- a/src/x64/full-codegen-x64.cc
+++ b/src/x64/full-codegen-x64.cc
@@ -345,15 +345,6 @@ void FullCodeGenerator::Generate() {
   } else {
     PrepareForBailoutForId(BailoutId::FunctionEntry(), NO_REGISTERS);
     { Comment cmnt(masm_, "[ Declarations");
-      // For named function expressions, declare the function name as a
-      // constant.
-      if (scope()->is_function_scope() && scope()->function() != NULL) {
-        VariableDeclaration* function = scope()->function();
-        DCHECK(function->proxy()->var()->mode() == CONST ||
-               function->proxy()->var()->mode() == CONST_LEGACY);
-        DCHECK(!function->proxy()->var()->IsUnallocatedOrGlobalSlot());
-        VisitVariableDeclaration(function);
-      }
       VisitDeclarations(scope()->declarations());
     }