The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/a5cc802d725d4710f0cff3ac5189d177011d275a

commit a5cc802d725d4710f0cff3ac5189d177011d275a
Author: Ian Vollick <vollick@chromium.org>
Date: Wed Nov 01 14:04:47 2017

[vr] Move the controller, laser, and reticle into the UiElement tree

These elements were previously special-cased in UiRenderer. With this
change, the elements are now included in the scene graph permitting
some simplifications and making it easier to, for example, fade out
the controller if desired.

There should only be one functional change in this CL: we break
reticle sorting. This is tracked by  crbug.com/779692 .

Bug:  774501 , 768512 ,776521
Change-Id: I5173b0a419a93abe324d496664bdafef933162a5
Reviewed-on: https://chromium-review.googlesource.com/744543
Reviewed-by: Christopher Grant <cjgrant@chromium.org>
Commit-Queue: Ian Vollick <vollick@chromium.org>
Cr-Commit-Position: refs/heads/master@{#513120}
[modify] https://crrev.com/a5cc802d725d4710f0cff3ac5189d177011d275a/chrome/browser/android/vr_shell/vr_controller.cc
[modify] https://crrev.com/a5cc802d725d4710f0cff3ac5189d177011d275a/chrome/browser/android/vr_shell/vr_controller.h
[modify] https://crrev.com/a5cc802d725d4710f0cff3ac5189d177011d275a/chrome/browser/android/vr_shell/vr_shell_gl.cc
[modify] https://crrev.com/a5cc802d725d4710f0cff3ac5189d177011d275a/chrome/browser/android/vr_shell/vr_shell_gl.h
[modify] https://crrev.com/a5cc802d725d4710f0cff3ac5189d177011d275a/chrome/browser/vr/BUILD.gn
[rename] https://crrev.com/a5cc802d725d4710f0cff3ac5189d177011d275a/chrome/browser/vr/controller_mesh.cc
[rename] https://crrev.com/a5cc802d725d4710f0cff3ac5189d177011d275a/chrome/browser/vr/controller_mesh.h
[modify] https://crrev.com/a5cc802d725d4710f0cff3ac5189d177011d275a/chrome/browser/vr/elements/content_element.h
[add] https://crrev.com/a5cc802d725d4710f0cff3ac5189d177011d275a/chrome/browser/vr/elements/controller.cc
[add] https://crrev.com/a5cc802d725d4710f0cff3ac5189d177011d275a/chrome/browser/vr/elements/controller.h
[add] https://crrev.com/a5cc802d725d4710f0cff3ac5189d177011d275a/chrome/browser/vr/elements/laser.cc
[add] https://crrev.com/a5cc802d725d4710f0cff3ac5189d177011d275a/chrome/browser/vr/elements/laser.h
[add] https://crrev.com/a5cc802d725d4710f0cff3ac5189d177011d275a/chrome/browser/vr/elements/reticle.cc
[add] https://crrev.com/a5cc802d725d4710f0cff3ac5189d177011d275a/chrome/browser/vr/elements/reticle.h
[add] https://crrev.com/a5cc802d725d4710f0cff3ac5189d177011d275a/chrome/browser/vr/elements/ui_element_name.cc
[modify] https://crrev.com/a5cc802d725d4710f0cff3ac5189d177011d275a/chrome/browser/vr/elements/ui_element_name.h
[add] https://crrev.com/a5cc802d725d4710f0cff3ac5189d177011d275a/chrome/browser/vr/model/controller_model.h
[modify] https://crrev.com/a5cc802d725d4710f0cff3ac5189d177011d275a/chrome/browser/vr/model/model.h
[add] https://crrev.com/a5cc802d725d4710f0cff3ac5189d177011d275a/chrome/browser/vr/model/reticle_model.h
[add] https://crrev.com/a5cc802d725d4710f0cff3ac5189d177011d275a/chrome/browser/vr/model/web_vr_timeout_state.h
[modify] https://crrev.com/a5cc802d725d4710f0cff3ac5189d177011d275a/chrome/browser/vr/test/fake_ui_element_renderer.cc
[modify] https://crrev.com/a5cc802d725d4710f0cff3ac5189d177011d275a/chrome/browser/vr/test/fake_ui_element_renderer.h
[modify] https://crrev.com/a5cc802d725d4710f0cff3ac5189d177011d275a/chrome/browser/vr/test/ui_pixel_test.cc
[modify] https://crrev.com/a5cc802d725d4710f0cff3ac5189d177011d275a/chrome/browser/vr/testapp/vr_test_context.cc
[modify] https://crrev.com/a5cc802d725d4710f0cff3ac5189d177011d275a/chrome/browser/vr/testapp/vr_test_context.h
[modify] https://crrev.com/a5cc802d725d4710f0cff3ac5189d177011d275a/chrome/browser/vr/ui.cc
[modify] https://crrev.com/a5cc802d725d4710f0cff3ac5189d177011d275a/chrome/browser/vr/ui.h
[modify] https://crrev.com/a5cc802d725d4710f0cff3ac5189d177011d275a/chrome/browser/vr/ui_element_renderer.h
[modify] https://crrev.com/a5cc802d725d4710f0cff3ac5189d177011d275a/chrome/browser/vr/ui_input_manager.cc
[modify] https://crrev.com/a5cc802d725d4710f0cff3ac5189d177011d275a/chrome/browser/vr/ui_input_manager.h
[modify] https://crrev.com/a5cc802d725d4710f0cff3ac5189d177011d275a/chrome/browser/vr/ui_input_manager_unittest.cc
[modify] https://crrev.com/a5cc802d725d4710f0cff3ac5189d177011d275a/chrome/browser/vr/ui_interface.h
[modify] https://crrev.com/a5cc802d725d4710f0cff3ac5189d177011d275a/chrome/browser/vr/ui_renderer.cc
[modify] https://crrev.com/a5cc802d725d4710f0cff3ac5189d177011d275a/chrome/browser/vr/ui_renderer.h
[modify] https://crrev.com/a5cc802d725d4710f0cff3ac5189d177011d275a/chrome/browser/vr/ui_renderer_unittest.cc
[modify] https://crrev.com/a5cc802d725d4710f0cff3ac5189d177011d275a/chrome/browser/vr/ui_scene.cc
[modify] https://crrev.com/a5cc802d725d4710f0cff3ac5189d177011d275a/chrome/browser/vr/ui_scene.h
[modify] https://crrev.com/a5cc802d725d4710f0cff3ac5189d177011d275a/chrome/browser/vr/ui_scene_constants.h
[modify] https://crrev.com/a5cc802d725d4710f0cff3ac5189d177011d275a/chrome/browser/vr/ui_scene_manager.cc
[modify] https://crrev.com/a5cc802d725d4710f0cff3ac5189d177011d275a/chrome/browser/vr/ui_scene_manager.h
[modify] https://crrev.com/a5cc802d725d4710f0cff3ac5189d177011d275a/chrome/browser/vr/vr_shell_renderer.cc
[modify] https://crrev.com/a5cc802d725d4710f0cff3ac5189d177011d275a/chrome/browser/vr/vr_shell_renderer.h