Lazy deopt without code patching.

runtime/vm/code_generator.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_CODE_GENERATOR_H_
 #define VM_CODE_GENERATOR_H_
 
 #include "vm/globals.h"
 #include "vm/runtime_entry.h"
 
 namespace dart {
 
 class Array;
 template <typename T> class GrowableArray;
 class ICData;
 class Instance;
 
 const char* DeoptReasonToCString(ICData::DeoptReasonId deopt_reason);
 
-void DeoptimizeAt(const Code& optimized_code, uword pc);
+void DeoptimizeAt(const Code& optimized_code, StackFrame* frame);
 void DeoptimizeFunctionsOnStack();
 
 double DartModulo(double a, double b);
 void SinCos(double arg, double* sin_res, double* cos_res);
 
 }  // namespace dart
 
 #endif  // VM_CODE_GENERATOR_H_