[SysApps][Android] Handle permission exception in Contact API

It is possible that user forgets to add permission for their apk. We need
to catch and handle such exception, otherwise it will cause xwalk crash,
as the bug indicates.

BUG=https://crosswalk-project.org/jira/browse/XWALK-778
Merge pull request #1435 from deqing/contact_permission_exception

[SysApps][Android] Handle permission exception in Contact API