Enable optimizer pipeline for DBC.

runtime/vm/simulator_dbc.h

 // Copyright (c) 2016, 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_SIMULATOR_DBC_H_
 #define VM_SIMULATOR_DBC_H_
 
 #ifndef VM_SIMULATOR_H_
 #error Do not include simulator_dbc.h directly; use simulator.h.
 #endif
@@ skipping 138 matching lines @@
 
   void InstanceCall2(Thread* thread,
                      RawICData* icdata,
                      RawObject** call_base,
                      RawObject** call_top,
                      RawArray** argdesc,
                      RawObjectPool** pp,
                      uint32_t** pc,
                      RawObject*** B, RawObject*** SP);
 
-  void InstanceCall3(Thread* thread,
-                     RawICData* icdata,
-                     RawObject** call_base,
-                     RawObject** call_top,
-                     RawArray** argdesc,
-                     RawObjectPool** pp,
-                     uint32_t** pc,
-                     RawObject*** B, RawObject*** SP);
-
   // Longjmp support for exceptions.
   SimulatorSetjmpBuffer* last_setjmp_buffer() {
     return last_setjmp_buffer_;
   }
   void set_last_setjmp_buffer(SimulatorSetjmpBuffer* buffer) {
     last_setjmp_buffer_ = buffer;
   }
 
   friend class SimulatorSetjmpBuffer;
   DISALLOW_COPY_AND_ASSIGN(Simulator);
 };
 
 }  // namespace dart
 
 #endif  // VM_SIMULATOR_DBC_H_