Remove JSBuiltinsObject.

src/bootstrapper.h

Index: src/bootstrapper.h
diff --git a/src/bootstrapper.h b/src/bootstrapper.h
index 105c2d0300fb8ec06af72c7201e7006496fa5112..2baa8ff61a5c76d9af9b0a90d564fbecd5b7d394 100644
--- a/src/bootstrapper.h
+++ b/src/bootstrapper.h
@@ -110,8 +110,8 @@ class Bootstrapper final {
   SourceCodeCache* extensions_cache() { return &extensions_cache_; }
 
   static bool CompileNative(Isolate* isolate, Vector<const char> name,
-                            Handle<JSObject> receiver, Handle<String> source,
-                            int argc, Handle<Object> argv[]);
+                            Handle<String> source, int argc,
+                            Handle<Object> argv[]);
   static bool CompileBuiltin(Isolate* isolate, int index);
   static bool CompileExperimentalBuiltin(Isolate* isolate, int index);
   static bool CompileExtraBuiltin(Isolate* isolate, int index);