Add a callback to inform embedders when an isolate is being shut down.

bin/run_vm_tests.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 <stdio.h>
 
 #include "vm/benchmark_test.h"
 #include "vm/dart.h"
 #include "vm/unit_test.h"
 
@@ skipping 82 matching lines @@
   } else {
     // First argument is the test name, the rest are vm flags.
     run_filter = argv[1];
     // Remove the first two values from the arguments.
     dart_argc = argc - 2;
     dart_argv = &argv[2];
   }
   bool set_vm_flags_success = Flags::ProcessCommandLineFlags(dart_argc,
                                                              dart_argv);
   ASSERT(set_vm_flags_success);
-  bool init_success = Dart::InitOnce(NULL, NULL);
+  bool init_success = Dart::InitOnce(NULL, NULL, NULL);
   ASSERT(init_success);
   // Apply the filter to all registered tests.
   TestCaseBase::RunAll();
   // Apply the filter to all registered benchmarks.
   Benchmark::RunAll(argv[0]);
   // Print a warning message if no tests or benchmarks were matched.
   if (run_matches == 0) {
     fprintf(stderr, "No tests matched: %s\n", run_filter);
     return 1;
   }
   return 0;
 }
 
 }  // namespace dart
 
 
 int main(int argc, const char** argv) {
   return dart::Main(argc, argv);
 }