Move no_callback_scope_depth_ and cha_ from isolate -> thread

runtime/vm/mirrors_api_impl.cc

 // 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.
 
 #include "include/dart_mirrors_api.h"
 
 #include "platform/assert.h"
 #include "vm/class_finalizer.h"
 #include "vm/dart.h"
 #include "vm/dart_api_impl.h"
@@ skipping 29 matching lines @@
 DART_EXPORT Dart_Handle Dart_QualifiedTypeName(Dart_Handle object) {
   DARTSCOPE(Thread::Current());
   const Object& obj = Object::Handle(Z, Api::UnwrapHandle(object));
   if (obj.IsType() || obj.IsClass()) {
     const Class& cls = (obj.IsType()) ?
         Class::Handle(Z, Type::Cast(obj).type_class()) : Class::Cast(obj);
     const char* str = cls.ToCString();
     if (str == NULL) {
       RETURN_NULL_ERROR(str);
     }
-    CHECK_CALLBACK_STATE(I);
+    CHECK_CALLBACK_STATE(T);
     return Api::NewHandle(I, String::New(str));
   } else {
     RETURN_TYPE_ERROR(Z, object, Class/Type);
   }
 }
 
 
 // --- Function and Variable Reflection ---
 
 // Outside of the vm, we expose setter names with a trailing '='.
@@ skipping 299 matching lines @@
     RETURN_TYPE_ERROR(Z, closure, Instance);
   }
 
   ASSERT(ClassFinalizer::AllClassesFinalized());
 
   RawFunction* rf = Closure::function(closure_obj);
   return Api::NewHandle(I, rf);
 }
 
 }  // namespace dart