am bea75db9: Merge "Fit and finish for camera affordance animations in...

am bea75db9: Merge "Fit and finish for camera affordance animations in keyguard - better timing - animate warp back when finger is released. - Improve on/off screen animation for warped view - Re-use existing constants for consistent timing. - Hide the challenge area

* commit 'bea75db9':
  Fit and finish for camera affordance animations in keyguard - better timing - animate warp back when finger is released. - Improve on/off screen animation for warped view - Re-use existing constants for consistent timing. - Hide the challenge area when the camera page is settling. - Reduce jank when camera page starts snap transition. - Prevent warping from going to previous page - Smoothly blend between PagedView and Warp animations when scrolling starts.