Do not store fp and sp values in TickSample

src/frames.cc

 // 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 198 matching lines @@
     return (script->IsScript() &&
             Script::TYPE_NATIVE != Script::cast(script)->type()->value());
 }
 
 
 // -------------------------------------------------------------------------
 
 
 SafeStackFrameIterator::SafeStackFrameIterator(
     Isolate* isolate,
-    Address fp, Address sp, Address low_bound, Address high_bound) :
-    StackFrameIteratorBase(isolate, false),
-    low_bound_(low_bound), high_bound_(high_bound),
-    top_frame_type_(StackFrame::NONE) {
+    Address fp, Address sp, Address js_entry_sp)
+    : StackFrameIteratorBase(isolate, false),
+      low_bound_(sp),
+      high_bound_(js_entry_sp),
+      top_frame_type_(StackFrame::NONE) {
   StackFrame::State state;
   StackFrame::Type type;
   ThreadLocalTop* top = isolate->thread_local_top();
   if (IsValidTop(top)) {
     type = ExitFrame::GetStateForFramePointer(Isolate::c_entry_fp(top), &state);
     top_frame_type_ = type;
   } else if (IsValidStackAddress(fp)) {
     ASSERT(fp != NULL);
     state.fp = fp;
     state.sp = sp;
@@ skipping 1370 matching lines @@
   ZoneList<StackFrame*> list(10, zone);
   for (StackFrameIterator it(isolate); !it.done(); it.Advance()) {
     StackFrame* frame = AllocateFrameCopy(it.frame(), zone);
     list.Add(frame, zone);
   }
   return list.ToVector();
 }
 
 
 } }  // namespace v8::internal