VR: More VR java code cleanup.

Cleans up our method ordering, public statics first, package/private
below, followed by non-statics and fixes visibility on a bunch of
functions.

Also cleans up a bunch of functions for testing that really just
wanted access to VrShellImpl.

Change-Id: Ieb731d82f5633c8ec69d7b427c696b891b46cab2
Reviewed-on: https://chromium-review.googlesource.com/1136856
Reviewed-by: Tibor Goldschwendt <tiborg@chromium.org>
Commit-Queue: Michael Thiessen <mthiesse@chromium.org>
Cr-Commit-Position: refs/heads/master@{#575327}
5 files changed