openlayers/ol3 — pull request #2048 by elemoine (2014-05-07 16:32:22+00:00)
Title: Remove duplicate record field "duration" in olx.js

This patch remove the following warning that we have at compile time:

```
/home/elemoine/src/ol3/buildcfg/../externs/olx.js:887: WARNING - Parse error. Duplicate record field duration
* @typedef {{duration: (number|undefined),
```

Please review.