diff --git a/runtime/include/dart_api.h b/runtime/include/dart_api.h
index f1d0a36..d5fa7f7 100644
--- a/runtime/include/dart_api.h
+++ b/runtime/include/dart_api.h
@@ -2459,15 +2459,6 @@
  */
 
 /**
- * Creates a native wrapper class.
- *
- * TODO(turnidge): Document.
- */
-DART_EXPORT Dart_Handle Dart_CreateNativeWrapperClass(Dart_Handle library,
-                                                      Dart_Handle class_name,
-                                                      int field_count);
-
-/**
  * Gets the number of native instance fields in an object.
  */
 DART_EXPORT Dart_Handle Dart_GetNativeInstanceFieldCount(Dart_Handle obj,
diff --git a/runtime/tests/vm/vm.status b/runtime/tests/vm/vm.status
index b17e237..dda2b1d 100644
--- a/runtime/tests/vm/vm.status
+++ b/runtime/tests/vm/vm.status
@@ -182,7 +182,6 @@
 cc/SourceReport_Coverage_UnusedClass_NoForceCompile: Fail
 cc/SourceReport_MultipleReports: Fail
 cc/SourceReport_PossibleBreakpoints_Simple: Fail
-cc/UseDartApi: Fail
 dart/data_uri_import_test/utf16: MissingRuntimeError
 dart/spawn_shutdown_test: SkipSlow
 
diff --git a/runtime/vm/benchmark_test.cc b/runtime/vm/benchmark_test.cc
index 60078c6..c3e1db3 100644
--- a/runtime/vm/benchmark_test.cc
+++ b/runtime/vm/benchmark_test.cc
@@ -240,7 +240,6 @@
 // Measure invocation of Dart API functions.
 //
 static void InitNativeFields(Dart_NativeArguments args) {
-  Dart_EnterScope();
   int count = Dart_GetNativeArgumentCount(args);
   EXPECT_EQ(1, count);
 
@@ -248,8 +247,6 @@
   EXPECT_VALID(recv);
   Dart_Handle result = Dart_SetNativeInstanceField(recv, 0, 7);
   EXPECT_VALID(result);
-
-  Dart_ExitScope();
 }
 
 // The specific api functions called here are a bit arbitrary.  We are
@@ -300,7 +297,8 @@
 BENCHMARK(UseDartApi) {
   const int kNumIterations = 1000000;
   const char* kScriptChars =
-      "class Class extends NativeFieldsWrapper{\n"
+      "import 'dart:nativewrappers';\n"
+      "class Class extends NativeFieldWrapperClass1 {\n"
       "  int init() native 'init';\n"
       "  int method(int param1, int param2) native 'method';\n"
       "}\n"
@@ -316,12 +314,7 @@
   Dart_Handle lib = TestCase::LoadTestScript(
       kScriptChars, reinterpret_cast<Dart_NativeEntryResolver>(bm_uda_lookup),
       USER_TEST_URI, false);
-
-  // Create a native wrapper class with native fields.
-  Dart_Handle result =
-      Dart_CreateNativeWrapperClass(lib, NewString("NativeFieldsWrapper"), 1);
-  EXPECT_VALID(result);
-  result = Dart_FinalizeLoading(false);
+  Dart_Handle result = Dart_FinalizeLoading(false);
   EXPECT_VALID(result);
 
   Dart_Handle args[1];
diff --git a/runtime/vm/dart_api_impl.cc b/runtime/vm/dart_api_impl.cc
index d880055..7d5eafc 100644
--- a/runtime/vm/dart_api_impl.cc
+++ b/runtime/vm/dart_api_impl.cc
@@ -4401,38 +4401,6 @@
 
 // --- Native fields and functions ---
 
-DART_EXPORT Dart_Handle Dart_CreateNativeWrapperClass(Dart_Handle library,
-                                                      Dart_Handle name,
-                                                      int field_count) {
-#if defined(DART_PRECOMPILED_RUNTIME)
-  return Api::NewError("%s: Cannot compile on an AOT runtime.", CURRENT_FUNC);
-#else
-  DARTSCOPE(Thread::Current());
-  const String& cls_name = Api::UnwrapStringHandle(Z, name);
-  if (cls_name.IsNull()) {
-    RETURN_TYPE_ERROR(Z, name, String);
-  }
-  const Library& lib = Api::UnwrapLibraryHandle(Z, library);
-  if (lib.IsNull()) {
-    RETURN_TYPE_ERROR(Z, library, Library);
-  }
-  if (!Utils::IsUint(16, field_count)) {
-    return Api::NewError(
-        "Invalid field_count passed to Dart_CreateNativeWrapperClass");
-  }
-  CHECK_CALLBACK_STATE(T);
-
-  String& cls_symbol = String::Handle(Z, Symbols::New(T, cls_name));
-  const Class& cls =
-      Class::Handle(Z, Class::NewNativeWrapper(lib, cls_symbol, field_count));
-  if (cls.IsNull()) {
-    return Api::NewError(
-        "Unable to create native wrapper class : already exists");
-  }
-  return Api::NewHandle(T, cls.RareType());
-#endif  // defined(DART_PRECOMPILED_RUNTIME)
-}
-
 DART_EXPORT Dart_Handle Dart_GetNativeInstanceFieldCount(Dart_Handle obj,
                                                          int* count) {
   Thread* thread = Thread::Current();
@@ -4659,6 +4627,7 @@
 DART_EXPORT Dart_Handle Dart_GetNativeReceiver(Dart_NativeArguments args,
                                                intptr_t* value) {
   NativeArguments* arguments = reinterpret_cast<NativeArguments*>(args);
+  TransitionNativeToVM transition(arguments->thread());
   ASSERT(arguments->thread()->isolate() == Isolate::Current());
   if (value == NULL) {
     RETURN_NULL_ERROR(value);