Support verified heap pointer writes on ia32.

runtime/vm/code_patcher.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.
 // Class for patching compiled code.
 
 #ifndef VM_CODE_PATCHER_H_
 #define VM_CODE_PATCHER_H_
 
 #include "vm/allocation.h"
 
@@ skipping 74 matching lines @@
   // Return the arguments descriptor array of the closure call
   // before the given return address.
   static RawArray* GetClosureArgDescAt(uword return_address,
                                        const Code& code);
 
   static intptr_t InstanceCallSizeInBytes();
 
   static void InsertCallAt(uword start, uword target);
 
   static RawObject* GetEdgeCounterAt(uword pc, const Code& code);
-#if defined(TARGET_ARCH_IA32)
-  static int32_t EdgeCounterIncrementSizeInBytes();
-#endif  // TARGET_ARCH_IA32
 
   static int32_t GetPoolOffsetAt(uword return_address);
   static void SetPoolOffsetAt(uword return_address, int32_t offset);
 };
 
 }  // namespace dart
 
 #endif  // VM_CODE_PATCHER_H_