Summary:
Was developing on a WebView and couldnt get it to run. Turns out its JS code mostly depends on `localStorage` and I realized it wasnt turned on in RN. This PR adds a prop, similar to `javascriptEnabledAndroid` to be able to turn DOM storage on / off.
TBH I dont really know how it works on IOS, so I created an android specific thingy. I assume DOM storage is enabled by default on IOS.
Closes https://github.com/facebook/react-native/pull/5065
Reviewed By: svcscm
Differential Revision: D2797735
Pulled By: androidtrunkagent
fb-gh-sync-id: cd60cfa4d24d80fb82e4f54f387a4517a99e75ab