Revert of [debugger] flood function for stepping before calling it.

src/x64/builtins-x64.cc

Index: src/x64/builtins-x64.cc
diff --git a/src/x64/builtins-x64.cc b/src/x64/builtins-x64.cc
index 9c933cb2229aa8a0f1b98762f353e1b4f034bbe3..e22bb59a4d7d155bd2ed2887da29277ef0ab03d3 100644
--- a/src/x64/builtins-x64.cc
+++ b/src/x64/builtins-x64.cc
@@ -332,8 +332,7 @@
       __ Call(code, RelocInfo::CODE_TARGET);
     } else {
       ParameterCount actual(rax);
-      __ InvokeFunction(rdi, rdx, actual, CALL_FUNCTION,
-                        CheckDebugStepCallWrapper());
+      __ InvokeFunction(rdi, rdx, actual, CALL_FUNCTION, NullCallWrapper());
     }
 
     // Store offset of return address for deoptimizer.
@@ -1734,11 +1733,10 @@
 
   __ LoadSharedFunctionInfoSpecialField(
       rbx, rdx, SharedFunctionInfo::kFormalParameterCountOffset);
+  __ movp(r8, FieldOperand(rdi, JSFunction::kCodeEntryOffset));
   ParameterCount actual(rax);
   ParameterCount expected(rbx);
-
-  __ InvokeFunctionCode(rdi, no_reg, expected, actual, JUMP_FUNCTION,
-                        CheckDebugStepCallWrapper());
+  __ InvokeCode(r8, no_reg, expected, actual, JUMP_FUNCTION, NullCallWrapper());
 
   // The function is a "classConstructor", need to raise an exception.
   __ bind(&class_constructor);