Do not store fp and sp values in TickSample

src/frames.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 863 matching lines @@
 
  private:
   bool IsValidFrame();
 };
 
 
 class SafeStackFrameIterator: public StackFrameIteratorBase {
  public:
   SafeStackFrameIterator(Isolate* isolate,
                          Address fp, Address sp,
-                         Address low_bound, Address high_bound);
+                         Address js_entry_sp);
 
   inline JavaScriptFrame* frame() const;
   void Advance();
 
   StackFrame::Type top_frame_type() const { return top_frame_type_; }
 
  private:
   void AdvanceOneFrame();
 
   bool IsValidStackAddress(Address addr) const {
@@ skipping 23 matching lines @@
 };
 
 
 // Reads all frames on the current stack and copies them into the current
 // zone memory.
 Vector<StackFrame*> CreateStackMap(Isolate* isolate, Zone* zone);
 
 } }  // namespace v8::internal
 
 #endif  // V8_FRAMES_H_