Determine camera view direction

Hi all

I created a default Unity project (version 5.6.1f1) and added VR support by enabling it from the project settings.
Then I added the floor and an OVRPlayerController object to navigate the scene.

How do I get the user's/camera's viewing vector? (i.e. the direction that the user/camera is facing)

Thanks

EDIT: Sorry, I meant to post this in the developers' section.