Revert Dart_PropagateError until I can track down the problems in

runtime/vm/parser.h

 // 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.
 
 #ifndef VM_PARSER_H_
 #define VM_PARSER_H_
 
 #include "include/dart_api.h"
 
 #include "vm/ast.h"
@@ skipping 172 matching lines @@
 
   // Reports error message at location of current token.
   void ErrorMsg(const char* msg, ...);
   void ErrorMsg(intptr_t token_index, const char* msg, ...);
   void Warning(const char* msg, ...);
   void Warning(intptr_t token_index, const char* msg, ...);
   void Unimplemented(const char* msg);
 
   const Instance& EvaluateConstExpr(AstNode* expr);
   void RunStaticFieldInitializer(const Field& field);
-  RawObject* EvaluateConstConstructorCall(
+  RawInstance* EvaluateConstConstructorCall(
       const Class& type_class,
       const AbstractTypeArguments& type_arguments,
       const Function& constructor,
       ArgumentListNode* arguments);
   AstNode* FoldConstExpr(intptr_t expr_pos, AstNode* expr);
 
   // Support for parsing of scripts.
   void ParseTopLevel();
   void ParseClassDefinition(GrowableArray<const Class*>* classes);
   void ParseInterfaceDefinition(GrowableArray<const Class*>* classes);
@@ skipping 251 matching lines @@
   // code at all points in the try block where an exit from the block is
   // done using 'return', 'break' or 'continue' statements.
   TryBlocks* try_blocks_list_;
 
   DISALLOW_COPY_AND_ASSIGN(Parser);
 };
 
 }  // namespace dart
 
 #endif  // VM_PARSER_H_