The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/6e0293dd97b4eccac970ace0807c761a4f1107c2

commit 6e0293dd97b4eccac970ace0807c761a4f1107c2
Author: Ian Vollick <vollick@chromium.org>
Date: Fri Aug 25 16:06:07 2017

[vr] Introduce Binding

With this CL we introduce the notion of a one way binding. It will
eventually be used to connect our model to views.

Bug:  758616 
Change-Id: Id970a4e16ffb69dcdcc6331951f608aedf86d0f3
Reviewed-on: https://chromium-review.googlesource.com/633336
Commit-Queue: Ian Vollick <vollick@chromium.org>
Reviewed-by: Christopher Grant <cjgrant@chromium.org>
Reviewed-by: Tibor Goldschwendt <tiborg@chromium.org>
Cr-Commit-Position: refs/heads/master@{#497424}
[modify] https://crrev.com/6e0293dd97b4eccac970ace0807c761a4f1107c2/chrome/browser/vr/BUILD.gn
[add] https://crrev.com/6e0293dd97b4eccac970ace0807c761a4f1107c2/chrome/browser/vr/databinding/binding.h
[add] https://crrev.com/6e0293dd97b4eccac970ace0807c761a4f1107c2/chrome/browser/vr/databinding/binding_base.cc
[add] https://crrev.com/6e0293dd97b4eccac970ace0807c761a4f1107c2/chrome/browser/vr/databinding/binding_base.h
[add] https://crrev.com/6e0293dd97b4eccac970ace0807c761a4f1107c2/chrome/browser/vr/databinding/binding_unittest.cc