Methods on the object prototype are not suggested in the debug repl

[alexdima]

Testing #10997

function Person(name, age) {
    this.name = name;
    this.age = age;
}
Person.prototype.greet = function(whom) {
    console.log('Hello ' + whom.name + ', my name is ' + this.name); // <---- BREAKPOINT HERE
}

Student.prototype = Object.create(Person.prototype);
function Student(name, age, school) {
    Person.call(this, name, age);
    this.school = school;
}
Student.prototype.getSchool = function() {
    return this.school;
}

var a = new Person('John', 20);
var b = new Student('Charlie', 20, 'UNI');
a.greet(b);

I would expect whom. to suggest greet() and getSchool() besides age, name and school.