Auto create ApiLocalScope before calling native functions, this ensures that

runtime/vm/verifier.h

 // Copyright (c) 2011, 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_VERIFIER_H_
 #define VM_VERIFIER_H_
 
 #include "vm/flags.h"
 #include "vm/globals.h"
 #include "vm/handles.h"
 #include "vm/visitor.h"
 
 namespace dart {
 
-DECLARE_FLAG(bool, verify_on_transition);
-
-#define VERIFY_ON_TRANSITION                                                   \
-  if (FLAG_verify_on_transition) {                                             \
-    VerifyPointersVisitor::VerifyPointers();                                   \
-    Isolate::Current()->heap()->Verify();                                      \
-  }                                                                            \
-
-
 // Forward declarations.
 class Isolate;
 class ObjectSet;
 class RawObject;
 
 class VerifyObjectVisitor : public ObjectVisitor {
  public:
   VerifyObjectVisitor(Isolate* isolate, ObjectSet* allocated_set)
       : ObjectVisitor(isolate),
         allocated_set_(allocated_set) {
@@ skipping 38 matching lines @@
   ObjectPointerVisitor* visitor_;
 
   ObjectSet* allocated_set;
 
   DISALLOW_COPY_AND_ASSIGN(VerifyWeakPointersVisitor);
 };
 
 }  // namespace dart
 
 #endif  // VM_VERIFIER_H_