**Do you want to request a _feature_ or report a _bug_?**

This is a bug report.

**What is the current behavior?**

In Safari, the type of input field is not updated properly. Consider the example linked below. It is a React component that display a button and an input field. The type of input field will be toggled between file or text by clicking the button. The change of input type is not being reflected.

I believe this is an issue with Safari. Setting the `type` property in Safari does not affect what is being rendered:

``` javascript
var a = document.createElement("input");
a.type = "text";
document.body.appendChild(a); // A text input is shown
a.type = "file"; // The input remains a text input in Safari.
```

**If the current behavior is a bug, please provide the steps to reproduce and if possible a minimal demo of the problem via https://jsfiddle.net or similar (template: https://jsfiddle.net/reactjs/69z2wepo/).**

https://jsfiddle.net/x1xtbjt0/2/

**What is the expected behavior?**

The input type should be changed, as in Chrome and Firefox.

**Which versions of React, and which browser / OS are affected by this issue? Did this work in previous versions of React?**

React: 15.1.0
ReactDOM: 15.1.0
Browser: Safari 9.1.1, Chrome 51.0.2704.103, Firefox 47.0
OS: OS X 10.11.5

var current = tracker.getValue();
    elem.value = value;
    tracker.setValue(current);
  }
  beforeEach(function() {
    jest.resetModuleRegistry();
    EventConstants = require('EventConstants');
    React = require('React');
    ReactDOM = require('ReactDOM');
    ReactDOMServer = require('ReactDOMServer');
    ReactDOMFeatureFlags = require('ReactDOMFeatureFlags');
    ReactLink = require('ReactLink');
    ReactTestUtils = require('ReactTestUtils');
    inputValueTracking = require('inputValueTracking');
    spyOn(console, 'error');
  });
  it('should display `defaultValue` of number 0', function() {
    var stub = <input type="text" defaultValue={0} />;
    stub = ReactTestUtils.renderIntoDocument(stub);
    var node = ReactDOM.findDOMNode(stub);
    expect(node.getAttribute('value')).toBe('0');
    expect(node.value).toBe('0');
  });
  it('should display "true" for `defaultValue` of `true`', function() {
    var stub = <input type="text" defaultValue={true} />;
    stub = ReactTestUtils.renderIntoDocument(stub);
    var node = ReactDOM.findDOMNode(stub);
    expect(node.value).toBe('true');
  });
  it('should display "false" for `defaultValue` of `false`', function() {