Allow redirecting disassembly and deoptimization traces into a file.

src/deoptimizer.h

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 433 matching lines @@
   // Materialized objects. Only used during heap object materialization.
   List<Handle<Object> >* materialized_values_;
   List<Handle<Object> >* materialized_objects_;
   int materialization_value_index_;
   int materialization_object_index_;
 
 #ifdef DEBUG
   DisallowHeapAllocation* disallow_heap_allocation_;
 #endif  // DEBUG
 
-  bool trace_;
+  CodeTracer::Scope* trace_scope_;
 
   static const int table_entry_size_;
 
   friend class FrameDescription;
   friend class DeoptimizedFrameInfo;
 };
 
 
 class FrameDescription {
  public:
@@ skipping 459 matching lines @@
   Object** expression_stack_;
   int source_position_;
 
   friend class Deoptimizer;
 };
 #endif
 
 } }  // namespace v8::internal
 
 #endif  // V8_DEOPTIMIZER_H_