Enables clean VM shutdown.

runtime/vm/isolate.h

 // Copyright (c) 2013, 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.
 
 #ifndef VM_ISOLATE_H_
 #define VM_ISOLATE_H_
 
 #include "include/dart_api.h"
 #include "platform/assert.h"
 #include "vm/base_isolate.h"
@@ skipping 704 matching lines @@
   static void VisitIsolates(IsolateVisitor* visitor);
 
   Counters* counters() { return &counters_; }
 
   // Handle service messages until we are told to resume execution.
   void PauseEventHandler();
 
  private:
   explicit Isolate(const Dart_IsolateFlags& api_flags);
 
+  static void KillAllIsolates(Isolate* isolate);
+
   void BuildName(const char* name_prefix);
   void PrintInvokedFunctions();
 
   void ProfileIdle();
 
   void set_user_tag(uword tag) {
     user_tag_ = tag;
   }
 
   void set_mutator_thread(Thread* thread) {
@@ skipping 281 matching lines @@
   intptr_t serialized_args_len_;
   uint8_t* serialized_message_;
   intptr_t serialized_message_len_;
   Isolate::Flags isolate_flags_;
   bool paused_;
 };
 
 }  // namespace dart
 
 #endif  // VM_ISOLATE_H_