[turbofan] Add support for accessor inlining.

src/bootstrapper.cc

Index: src/bootstrapper.cc
diff --git a/src/bootstrapper.cc b/src/bootstrapper.cc
index 0ffb0c3c281c6482022520df4868b5e1e5b871da..bbc13a868859fb12c06d88f779974403d8f00d70 100644
--- a/src/bootstrapper.cc
+++ b/src/bootstrapper.cc
@@ -372,6 +372,7 @@ Handle<JSFunction> InstallGetter(Handle<JSObject> target,
   Handle<Object> setter = target->GetIsolate()->factory()->undefined_value();
   JSObject::DefineAccessor(target, property_name, getter, setter, attributes)
       .Check();
+  getter->shared()->set_native(true);
   return getter;
 }