Revise duplicate interface check

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 "lib/invocation_mirror.h"
@@ skipping 368 matching lines @@
                                     LocalVariable* receiver);
   AstNode* ParseSuperInitializer(const Class& cls, LocalVariable* receiver);
   AstNode* ParseInitializer(const Class& cls,
                             LocalVariable* receiver,
                             GrowableArray<Field*>* initialized_fields);
   void ParseConstructorRedirection(const Class& cls, LocalVariable* receiver);
   void ParseInitializers(const Class& cls,
                          LocalVariable* receiver,
                          GrowableArray<Field*>* initialized_fields);
   String& ParseNativeDeclaration();
-  RawArray* ParseInterfaceList(const AbstractType& super_type);
+  void ParseInterfaceList(const Class& cls);
   RawAbstractType* ParseMixins(const AbstractType& super_type);
-  void AddInterfaceIfUnique(intptr_t interfaces_pos,
-                            const GrowableObjectArray& interface_list,
-                            const AbstractType& interface);
-  void AddInterfaces(intptr_t interfaces_pos,
-                     const Class& cls,
-                     const Array& interfaces);
   StaticCallNode* BuildInvocationMirrorAllocation(
       intptr_t call_pos,
       const String& function_name,
       const ArgumentListNode& function_args);
   ArgumentListNode* BuildNoSuchMethodArguments(
       intptr_t call_pos,
       const String& function_name,
       const ArgumentListNode& function_args);
   RawFunction* GetSuperFunction(intptr_t token_pos,
                                 const String& name,
@@ skipping 264 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_