Add test case to XRRigidTransform

Added test case that performs a point transformation using rigid
transform's matrix and validates that the same transformation is
performed when using quaternion used to construct the rigid transform.

Change-Id: I4f26f8101e2f788c5e248570f923b45cec6445ea
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1521268
Commit-Queue: Piotr Bialecki <bialpio@chromium.org>
Reviewed-by: Klaus Weidner <klausw@chromium.org>
Cr-Commit-Position: refs/heads/master@{#640519}
3 files changed