Remove more feature in product mode

runtime/vm/debugger_ia32.cc

 // 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.
 
 #include "vm/globals.h"
 #if defined(TARGET_ARCH_IA32)
 
 #include "vm/debugger.h"
 
 #include "vm/code_patcher.h"
 #include "vm/cpu.h"
 #include "vm/disassembler.h"
 #include "vm/object.h"
 #include "vm/os.h"
 #include "vm/stack_frame.h"
 #include "vm/stub_code.h"
 
 namespace dart {
 
+#ifndef PRODUCT
+
 RawCode* CodeBreakpoint::OrigStubAddress() const {
   return saved_value_;
 }
 
 
 void CodeBreakpoint::PatchCode() {
   ASSERT(!is_enabled_);
   const Code& code = Code::Handle(code_);
   const Instructions& instrs = Instructions::Handle(code.instructions());
   Code& stub_target = Code::Handle();
@@ skipping 33 matching lines @@
         CodePatcher::PatchStaticCallAt(pc_, code, Code::Handle(saved_value_));
         break;
       }
       default:
         UNREACHABLE();
     }
   }
   is_enabled_ = false;
 }
 
+#endif  // !PRODUCT
+
 }  // namespace dart
 
 #endif  // defined TARGET_ARCH_IA32