Introduce accessors on builtins instance

test/cctest/test-alloc.cc

Index: test/cctest/test-alloc.cc
diff --git a/test/cctest/test-alloc.cc b/test/cctest/test-alloc.cc
index 00ff86621e4e0f0d715719bd9b944aa6743eb997..3d8157d9557d802178051a5ac78c1a7685a30e89 100644
--- a/test/cctest/test-alloc.cc
+++ b/test/cctest/test-alloc.cc
@@ -91,7 +91,7 @@ static MaybeObject* AllocateAfterFailures() {
   // Test that we can allocate in old pointer space and code space.
   CHECK(!heap->AllocateFixedArray(100, TENURED)->IsFailure());
   CHECK(!heap->CopyCode(Isolate::Current()->builtins()->builtin(
-      Builtins::Illegal))->IsFailure());
+      Builtins::kIllegal))->IsFailure());
 
   // Return success.
   return Smi::FromInt(42);
@@ -135,7 +135,7 @@ TEST(StressJS) {
   // something empty.
   FACTORY->NewJSObject(function);
   function->ReplaceCode(Isolate::Current()->builtins()->builtin(
-      Builtins::EmptyFunction));
+      Builtins::kEmptyFunction));
   // Patch the map to have an accessor for "get".
   Handle<Map> map(function->initial_map());
   Handle<DescriptorArray> instance_descriptors(map->instance_descriptors());