Remove some Isolate::current_zone() calls, as it gets the zone from mutator thread not the current …

runtime/vm/debugger.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 "vm/debugger.h"
 
 #include "include/dart_api.h"
 
 #include "vm/code_generator.h"
 #include "vm/code_patcher.h"
@@ skipping 2384 matching lines @@
   }
   return Array::MakeArray(field_list);
 }
 
 
 void Debugger::CollectLibraryFields(const GrowableObjectArray& field_list,
                                     const Library& lib,
                                     const String& prefix,
                                     bool include_private_fields) {
   DictionaryIterator it(lib);
-  Object& entry = Object::Handle(isolate_->current_zone());
+  Object& entry = Object::Handle(zone());
   Field& field = Field::Handle(zone());
   String& field_name = String::Handle(zone());
-  PassiveObject& field_value = PassiveObject::Handle(isolate_->current_zone());
+  PassiveObject& field_value = PassiveObject::Handle(zone());
   while (it.HasNext()) {
     entry = it.GetNext();
     if (entry.IsField()) {
       field ^= entry.raw();
       ASSERT(field.is_static());
       field_name = field.name();
       if ((field_name.CharAt(0) == '_') && !include_private_fields) {
         // Skip library-private field.
         continue;
       }
@@ skipping 820 matching lines @@
 }
 
 
 void Debugger::RegisterCodeBreakpoint(CodeBreakpoint* bpt) {
   ASSERT(bpt->next() == NULL);
   bpt->set_next(code_breakpoints_);
   code_breakpoints_ = bpt;
 }
 
 }  // namespace dart