Add Dart_PropagateError.

runtime/vm/object_store.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_OBJECT_STORE_H_
 #define VM_OBJECT_STORE_H_
 
 #include "vm/object.h"
 
 namespace dart {
@@ skipping 242 matching lines @@
   void set_pending_classes(const Array& value) {
     ASSERT(!value.IsNull());
     pending_classes_ = value.raw();
   }
 
   RawError* sticky_error() const { return sticky_error_; }
   void set_sticky_error(const Error& value) {
     ASSERT(!value.IsNull());
     sticky_error_ = value.raw();
   }
+  void clear_sticky_error() { sticky_error_ = Error::null(); }
 
   RawBool* true_value() const { return true_value_; }
   void set_true_value(const Bool& value) { true_value_ = value.raw(); }
 
   RawBool* false_value() const { return false_value_; }
   void set_false_value(const Bool& value) { false_value_ = value.raw(); }
 
   RawArray* empty_array() const { return empty_array_; }
   void set_empty_array(const Array& value) { empty_array_ = value.raw(); }
 
@@ skipping 79 matching lines @@
   bool preallocate_objects_called_;
 
   friend class SnapshotReader;
 
   DISALLOW_COPY_AND_ASSIGN(ObjectStore);
 };
 
 }  // namespace dart
 
 #endif  // VM_OBJECT_STORE_H_