Revert "Revert "Finalize reachable weak persistent handles at isolate shutdown.""

runtime/vm/dart_api_impl_test.cc

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "include/dart_api.h"
 #include "platform/assert.h"
 #include "platform/json.h"
 #include "platform/utils.h"
 #include "vm/class_finalizer.h"
 #include "vm/dart_api_impl.h"
@@ skipping 1420 matching lines @@
   EXPECT(*peer == 0);
   Isolate::Current()->heap()->CollectGarbage(Heap::kOld);
   EXPECT(*peer == 0);
   GCTestHelper::CollectNewSpace(Heap::kIgnoreApiCallbacks);
   EXPECT(*peer == 42);
   delete peer;
   Dart_DeletePersistentHandle(weak_ref);
 }
 
 
+UNIT_TEST_CASE(WeakPersistentHandlesCallbackShutdown) {
+  TestCase::CreateTestIsolate();
+  Dart_EnterScope();
+  Dart_Handle ref = Dart_True();
+  int peer = 1234;
+  Dart_NewWeakPersistentHandle(ref,
+                               &peer,
+                               WeakPersistentHandlePeerFinalizer);
+  Dart_ShutdownIsolate();
+  EXPECT(peer == 42);
+}
+
+
 TEST_CASE(ObjectGroups) {
   Dart_Handle strong = Dart_Null();
   EXPECT(Dart_IsNull(strong));
 
   Dart_Handle weak1 = Dart_Null();
   EXPECT(Dart_IsNull(weak1));
 
   Dart_Handle weak2 = Dart_Null();
   EXPECT(Dart_IsNull(weak2));
 
@@ skipping 5041 matching lines @@
   EXPECT(Dart_IsString(str));
   len = -1;
   EXPECT_VALID(Dart_StringLength(str, &len));
   EXPECT_EQ(0, len);
 }
 
 
 #endif  // defined(TARGET_ARCH_IA32) || defined(TARGET_ARCH_X64).
 
 }  // namespace dart