Fix asserts in StackFrameIterator which were effectively disabled

runtime/vm/native_entry.cc

 // 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.
 
 #include "vm/native_entry.h"
 
 #include "include/dart_api.h"
 
 #include "vm/bootstrap.h"
 #include "vm/code_patcher.h"
@@ skipping 246 matching lines @@
 
   NativeFunction target_function = NULL;
   bool is_bootstrap_native = false;
   bool is_auto_scope = true;
 
   {
     TransitionGeneratedToVM transition(arguments->thread());
     StackZone stack_zone(arguments->thread());
     Zone* zone = stack_zone.GetZone();
 
-    DartFrameIterator iterator;
+    DartFrameIterator iterator(arguments->thread(),
+                               StackFrameIterator::kNoCrossThreadIteration);
     StackFrame* caller_frame = iterator.NextFrame();
 
     const Code& code = Code::Handle(zone, caller_frame->LookupDartCode());
     const Function& func = Function::Handle(zone, code.function());
 
     if (FLAG_trace_natives) {
       THR_Print("Resolving native target for %s\n", func.ToCString());
     }
 
     target_function =
@@ skipping 60 matching lines @@
     // Because this call is within a compilation unit, Clang doesn't respect
     // the ABI alignment here.
     NativeEntry::NoScopeNativeCallWrapperNoStackCheck(
         args, reinterpret_cast<Dart_NativeFunction>(target_function));
   }
 }
 #endif  // !defined(TARGET_ARCH_DBC)
 
 
 }  // namespace dart