Pass in the isolate parameter to the weak persistent callback handler so that

runtime/vm/dart_api_state.h

 // 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.
 
 #ifndef VM_DART_API_STATE_H_
 #define VM_DART_API_STATE_H_
 
 #include "include/dart_api.h"
 
 #include "platform/thread.h"
@@ skipping 199 matching lines @@
   }
   Dart_WeakPersistentHandle apiHandle() {
     return reinterpret_cast<Dart_WeakPersistentHandle>(this);
   }
 
   static bool IsPrologueWeakPersistentHandle(Dart_WeakPersistentHandle handle) {
     uword addr = reinterpret_cast<uword>(handle);
     return (addr & kWeakPersistentTagMask) == kPrologueWeakPersistentTag;
   }
   static FinalizablePersistentHandle* Cast(Dart_WeakPersistentHandle handle);
-  static void Finalize(FinalizablePersistentHandle* handle,
+  static void Finalize(Isolate* isolate,
+                       FinalizablePersistentHandle* handle,
                        bool is_prologue_weak) {
     Dart_WeakPersistentHandleFinalizer callback = handle->callback();
     if (callback != NULL) {
       void* peer = handle->peer();
       handle->Clear();
       Dart_WeakPersistentHandle object = is_prologue_weak ?
           handle->apiPrologueHandle() :
           handle->apiHandle();
-      (*callback)(object, peer);
+      (*callback)(reinterpret_cast<Dart_Isolate>(isolate), object, peer);
     } else {
       handle->Clear();
     }
   }
 
  private:
   enum {
     kWeakPersistentTag = 0,
     kPrologueWeakPersistentTag = 1,
     kWeakPersistentTagSize = 1,
@@ skipping 575 matching lines @@
           ApiNativeScope::Current()->zone()) {}
   ApiGrowableArray()
       : BaseGrowableArray<T, ValueObject>(
           ApiNativeScope::Current()->zone()) {}
 };
 
 
 }  // namespace dart
 
 #endif  // VM_DART_API_STATE_H_