[turbofan] Rewrite ToObject as TurboFan stub.

src/code-stubs.h

Index: src/code-stubs.h
diff --git a/src/code-stubs.h b/src/code-stubs.h
index ccc8799503d105b8284f25e8913e3c5957e76cc8..ec4da53b27c85100367b240ec10dae724397bb25 100644
--- a/src/code-stubs.h
+++ b/src/code-stubs.h
@@ -3153,13 +3153,12 @@ class ToNameStub final : public PlatformCodeStub {
   DEFINE_PLATFORM_CODE_STUB(ToName, PlatformCodeStub);
 };
 
-
-class ToObjectStub final : public HydrogenCodeStub {
+class ToObjectStub final : public TurboFanCodeStub {
  public:
-  explicit ToObjectStub(Isolate* isolate) : HydrogenCodeStub(isolate) {}
+  explicit ToObjectStub(Isolate* isolate) : TurboFanCodeStub(isolate) {}
 
   DEFINE_CALL_INTERFACE_DESCRIPTOR(TypeConversion);
-  DEFINE_HYDROGEN_CODE_STUB(ToObject, HydrogenCodeStub);
+  DEFINE_TURBOFAN_CODE_STUB(ToObject, TurboFanCodeStub);
 };
 
 #undef DEFINE_CALL_INTERFACE_DESCRIPTOR