Port count-based profiler to x64

src/debug.cc

Index: src/debug.cc
diff --git a/src/debug.cc b/src/debug.cc
index 01f6f398af7ee6d9bfe2482af1f3905a25375d52..b6cdd7ff499f1634a802d128aa4ab1983c60c4bc 100644
--- a/src/debug.cc
+++ b/src/debug.cc
@@ -1847,13 +1847,6 @@ static void RedirectActivationsToRecompiledCodeOnThread(
       // break slots.
       debug_break_slot_count++;
     }
-    if (frame_code->has_self_optimization_header() &&
-        !new_code->has_self_optimization_header()) {
-      delta -= FullCodeGenerator::self_optimization_header_size();
-    } else {
-      ASSERT(frame_code->has_self_optimization_header() ==
-             new_code->has_self_optimization_header());
-    }
     int debug_break_slot_bytes =
         debug_break_slot_count * Assembler::kDebugBreakSlotLength;
     if (FLAG_trace_deopt) {