Checkbox: shift+click

#### Bug, feature request, or proposal:

Bug

#### What is the expected behavior?

By holding down the shift key and clicking a checkbox this should checked.

#### What is the current behavior?

The checkbox is not marked only shows the ripple effect.

#### What is the use-case or motivation for changing an existing behavior?

I would like to implement a Gmail-style checkbox.

#### Which versions of Angular, Material, OS, TypeScript, browsers are affected?

Material: 2.0.0-beta.8
Angular: 4.3.2
TypeScript: 2.4.2
Chrome

#### Is there anything else we should know?
[https://material.angular.io/components/checkbox/examples](https://material.angular.io/components/checkbox/examples)

In Safari it works.

从 Angular Material checkbox examples 开始，并使用 issue 中列出的版本在 Chrome 中复现 shift-click 行为。跟踪 checkbox 交互处理，以确定为什么只显示 ripple；当 shift-click 能按预期标记 checkbox 且不会导致普通点击出现回归时，即表示完成。

由索引模型根据 Issue 内容生成。