Cleanup the way the debugger stores live registers when entering at a break...

src/frames.h

 // Copyright 2006-2008 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 262 matching lines @@
       : EntryFrame(iterator) { }
 
  private:
   friend class StackFrameIterator;
 };
 
 
 // Exit frames are used to exit JavaScript execution and go to C.
 class ExitFrame: public StackFrame {
  public:
-  enum Mode { MODE_NORMAL, MODE_DEBUG };
   virtual Type type() const { return EXIT; }
 
   virtual Code* unchecked_code() const;
 
   Object*& code_slot() const;
 
   // Garbage collection support.
   virtual void Iterate(ObjectVisitor* v) const;
 
   virtual void SetCallerFp(Address caller_fp);
@@ skipping 391 matching lines @@
 };
 
 
 // Reads all frames on the current stack and copies them into the current
 // zone memory.
 Vector<StackFrame*> CreateStackMap();
 
 } }  // namespace v8::internal
 
 #endif  // V8_FRAMES_H_