This is part one of a simplification of testDeviceLost. This
patch changes the instances where we would use the notify
parameter to notify the Display directly. We can do this
by using the Display attached to the Renderer in some cases.

BUG=angle:795

Change-Id: I24fd827989d47b0b2cefef7afb99fa62581ddc1b
Reviewed-on: https://chromium-review.googlesource.com/228910Tested-by: Jamie Madill <jmadill@chromium.org>
Reviewed-by: Geoff Lang <geofflang@chromium.org>