The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/7332d07490f42ab4fa9ee1a958d9b4e07531b025

commit 7332d07490f42ab4fa9ee1a958d9b4e07531b025
Author: Ian Vollick <vollick@chromium.org>
Date: Fri Jan 19 15:43:42 2018

[vr] Add controller tooltips

The tooltips are only visible when the controller has been in the
viewport for longer than a minimum threshold of time. The "exit" button
is only labeled when in fullscreen mode.

Bug:  803638 
Cq-Include-Trybots: master.tryserver.chromium.android:android_optional_gpu_tests_rel;master.tryserver.chromium.linux:linux_optional_gpu_tests_rel;master.tryserver.chromium.mac:mac_optional_gpu_tests_rel;master.tryserver.chromium.win:win_optional_gpu_tests_rel
Change-Id: Ia5e742a97e7a89c74fc0570e15ff2b5035ace524
Reviewed-on: https://chromium-review.googlesource.com/875172
Commit-Queue: Ian Vollick <vollick@chromium.org>
Reviewed-by: Christopher Grant <cjgrant@chromium.org>
Reviewed-by: Yash Malik <ymalik@chromium.org>
Cr-Commit-Position: refs/heads/master@{#530516}
[modify] https://crrev.com/7332d07490f42ab4fa9ee1a958d9b4e07531b025/chrome/app/generated_resources.grd
[modify] https://crrev.com/7332d07490f42ab4fa9ee1a958d9b4e07531b025/chrome/browser/android/vr_shell/vr_controller.cc
[modify] https://crrev.com/7332d07490f42ab4fa9ee1a958d9b4e07531b025/chrome/browser/android/vr_shell/vr_controller.h
[modify] https://crrev.com/7332d07490f42ab4fa9ee1a958d9b4e07531b025/chrome/browser/android/vr_shell/vr_shell_gl.cc
[modify] https://crrev.com/7332d07490f42ab4fa9ee1a958d9b4e07531b025/chrome/browser/android/vr_shell/vr_shell_gl.h
[modify] https://crrev.com/7332d07490f42ab4fa9ee1a958d9b4e07531b025/chrome/browser/vr/BUILD.gn
[modify] https://crrev.com/7332d07490f42ab4fa9ee1a958d9b4e07531b025/chrome/browser/vr/elements/text.cc
[modify] https://crrev.com/7332d07490f42ab4fa9ee1a958d9b4e07531b025/chrome/browser/vr/elements/text.h
[modify] https://crrev.com/7332d07490f42ab4fa9ee1a958d9b4e07531b025/chrome/browser/vr/elements/ui_element.cc
[modify] https://crrev.com/7332d07490f42ab4fa9ee1a958d9b4e07531b025/chrome/browser/vr/elements/ui_element_name.cc
[modify] https://crrev.com/7332d07490f42ab4fa9ee1a958d9b4e07531b025/chrome/browser/vr/elements/ui_element_name.h
[modify] https://crrev.com/7332d07490f42ab4fa9ee1a958d9b4e07531b025/chrome/browser/vr/elements/ui_texture.cc
[modify] https://crrev.com/7332d07490f42ab4fa9ee1a958d9b4e07531b025/chrome/browser/vr/elements/ui_texture.h
[modify] https://crrev.com/7332d07490f42ab4fa9ee1a958d9b4e07531b025/chrome/browser/vr/model/color_scheme.cc
[modify] https://crrev.com/7332d07490f42ab4fa9ee1a958d9b4e07531b025/chrome/browser/vr/model/color_scheme.h
[add] https://crrev.com/7332d07490f42ab4fa9ee1a958d9b4e07531b025/chrome/browser/vr/model/controller_model.cc
[modify] https://crrev.com/7332d07490f42ab4fa9ee1a958d9b4e07531b025/chrome/browser/vr/model/controller_model.h
[modify] https://crrev.com/7332d07490f42ab4fa9ee1a958d9b4e07531b025/chrome/browser/vr/platform_controller.h
[modify] https://crrev.com/7332d07490f42ab4fa9ee1a958d9b4e07531b025/chrome/browser/vr/test/ui_pixel_test.cc
[modify] https://crrev.com/7332d07490f42ab4fa9ee1a958d9b4e07531b025/chrome/browser/vr/testapp/vr_test_context.cc
[modify] https://crrev.com/7332d07490f42ab4fa9ee1a958d9b4e07531b025/chrome/browser/vr/testapp/vr_test_context.h
[modify] https://crrev.com/7332d07490f42ab4fa9ee1a958d9b4e07531b025/chrome/browser/vr/ui.cc
[modify] https://crrev.com/7332d07490f42ab4fa9ee1a958d9b4e07531b025/chrome/browser/vr/ui_input_manager.cc
[modify] https://crrev.com/7332d07490f42ab4fa9ee1a958d9b4e07531b025/chrome/browser/vr/ui_input_manager.h
[modify] https://crrev.com/7332d07490f42ab4fa9ee1a958d9b4e07531b025/chrome/browser/vr/ui_input_manager_unittest.cc
[modify] https://crrev.com/7332d07490f42ab4fa9ee1a958d9b4e07531b025/chrome/browser/vr/ui_scene_constants.h
[modify] https://crrev.com/7332d07490f42ab4fa9ee1a958d9b4e07531b025/chrome/browser/vr/ui_scene_creator.cc
[modify] https://crrev.com/7332d07490f42ab4fa9ee1a958d9b4e07531b025/chrome/browser/vr/ui_unittest.cc

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/224aa1b2b81a61b42256faf5c91f5b726cd24833

commit 224aa1b2b81a61b42256faf5c91f5b726cd24833
Author: Ian Vollick <vollick@chromium.org>
Date: Mon Jan 22 15:20:01 2018

[vr] Controller Tooltip Tweaks

Adds a "back" label that appears when in editing mode, fixes the
position of the callout lines relative to the controller, and corrects
bounding box issues when using text shadows.

Bug:  803638 
Cq-Include-Trybots: master.tryserver.chromium.android:android_optional_gpu_tests_rel;master.tryserver.chromium.linux:linux_optional_gpu_tests_rel;master.tryserver.chromium.mac:mac_optional_gpu_tests_rel;master.tryserver.chromium.win:win_optional_gpu_tests_rel
Change-Id: I357831bf4358f71d095b723b6af27ea4e7d21eec
Reviewed-on: https://chromium-review.googlesource.com/878382
Reviewed-by: Yash Malik <ymalik@chromium.org>
Commit-Queue: Ian Vollick <vollick@chromium.org>
Cr-Commit-Position: refs/heads/master@{#530862}
[modify] https://crrev.com/224aa1b2b81a61b42256faf5c91f5b726cd24833/chrome/app/generated_resources.grd
[modify] https://crrev.com/224aa1b2b81a61b42256faf5c91f5b726cd24833/chrome/browser/vr/elements/text.cc
[modify] https://crrev.com/224aa1b2b81a61b42256faf5c91f5b726cd24833/chrome/browser/vr/elements/ui_element_name.cc
[modify] https://crrev.com/224aa1b2b81a61b42256faf5c91f5b726cd24833/chrome/browser/vr/elements/ui_element_name.h
[modify] https://crrev.com/224aa1b2b81a61b42256faf5c91f5b726cd24833/chrome/browser/vr/elements/ui_texture.cc
[modify] https://crrev.com/224aa1b2b81a61b42256faf5c91f5b726cd24833/chrome/browser/vr/testapp/vr_test_context.cc
[modify] https://crrev.com/224aa1b2b81a61b42256faf5c91f5b726cd24833/chrome/browser/vr/ui_scene_constants.h
[modify] https://crrev.com/224aa1b2b81a61b42256faf5c91f5b726cd24833/chrome/browser/vr/ui_scene_creator.cc
[modify] https://crrev.com/224aa1b2b81a61b42256faf5c91f5b726cd24833/chrome/browser/vr/ui_unittest.cc

The following revision refers to this bug:
  https://chromium.googlesource.com/chromium/src.git/+/2e608605aefbecc9ea1400d07b3c152fa2fd8272

commit 2e608605aefbecc9ea1400d07b3c152fa2fd8272
Author: Ian Vollick <vollick@chromium.org>
Date: Tue Jan 23 16:13:46 2018

[vr] Use correct controller tooltip when in voice input mode.

I missed a mode where we need to label the app button on the controller.

This CL also wires the middle mouse button to Ui::OnAppButtonClicked in
the test app.

Bug:  803638 
Cq-Include-Trybots: master.tryserver.chromium.android:android_optional_gpu_tests_rel;master.tryserver.chromium.linux:linux_optional_gpu_tests_rel;master.tryserver.chromium.linux:linux_vr;master.tryserver.chromium.mac:mac_optional_gpu_tests_rel;master.tryserver.chromium.win:win_optional_gpu_tests_rel
Change-Id: Ifbc126189b2ba0b2c59a73ca740635b3998c4241
Reviewed-on: https://chromium-review.googlesource.com/881205
Reviewed-by: Yash Malik <ymalik@chromium.org>
Commit-Queue: Ian Vollick <vollick@chromium.org>
Cr-Commit-Position: refs/heads/master@{#531253}
[modify] https://crrev.com/2e608605aefbecc9ea1400d07b3c152fa2fd8272/chrome/browser/vr/testapp/vr_test_context.cc
[modify] https://crrev.com/2e608605aefbecc9ea1400d07b3c152fa2fd8272/chrome/browser/vr/ui_scene_creator.cc
[modify] https://crrev.com/2e608605aefbecc9ea1400d07b3c152fa2fd8272/chrome/browser/vr/ui_unittest.cc

Added test case "Controller Tooltips" to "VR Browsing manual test plan".
Verified the on 66.0.3359.10 that the tooltips appear as expected.