[debugger] Remove code to predict step-in target.

src/objects.cc

Index: src/objects.cc
diff --git a/src/objects.cc b/src/objects.cc
index 6ef3c604fb474a42ffbf4a0667eeafc059f759af..be0843e7032d8a44b88ed5414d51aa1a37c37440 100644
--- a/src/objects.cc
+++ b/src/objects.cc
@@ -1062,11 +1062,6 @@ MaybeHandle<Object> Object::GetPropertyWithDefinedGetter(
     return MaybeHandle<Object>();
   }
 
-  Debug* debug = isolate->debug();
-  // Handle stepping into a getter if step into is active.
-  // TODO(rossberg): should this apply to getters that are function proxies?
-  if (debug->is_active()) debug->HandleStepIn(getter);
-
   return Execution::Call(isolate, getter, receiver, 0, NULL);
 }
 
@@ -1077,11 +1072,6 @@ Maybe<bool> Object::SetPropertyWithDefinedSetter(Handle<Object> receiver,
                                                  ShouldThrow should_throw) {
   Isolate* isolate = setter->GetIsolate();
 
-  Debug* debug = isolate->debug();
-  // Handle stepping into a setter if step into is active.
-  // TODO(rossberg): should this apply to getters that are function proxies?
-  if (debug->is_active()) debug->HandleStepIn(setter);
-
   Handle<Object> argv[] = { value };
   RETURN_ON_EXCEPTION_VALUE(isolate, Execution::Call(isolate, setter, receiver,
                                                      arraysize(argv), argv),