Crosswalk runtime needs the two permissions to auto detect connection status.

See more details at: https://crosswalk-project.org/jira/browse/XWALK-1324
Add getView() API into CordovaWebView.

This API is to get the actual View.

The concrete webview implementation can use compositing instead of extending
underlying webview.
Merge pull request #2 from huningxin/pluggable_webview

Pluggable webview