MetadataCollector in tools doesn't collect metadata for 'get' and 'set' property declarations

Collect metadata for the following type:

```
import {Component, Input} from 'angular2/core';

@Component({})
export class AppComponent {
  private _name: string;
  @Input('firstName') set name(value: string) {
    this._name = value;
  }
}
```

Expected: 'AppComponent' to contain the name property declaration information.
Received: No property information recorded  for the class.
