Enable VR DFM conditional install for DD-ready devices

The CL uses the new 'conditional modules' feature to auto-install the
VR DFM upon updating Chrome on supported devices. This should provide a
much better experience when launching Chrome from the DDH for the first
time on devices where the cost of having the VR DFM unused is minimal.

This is only used on monochrome_bundle builds.

Bug: 961796
Change-Id: I79b095205b5dd947484738034bf50a2a0c4c8ca8
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1714144Reviewed-by: Tibor Goldschwendt <tiborg@chromium.org>
Commit-Queue: Will Cassella <cassew@google.com>
Cr-Commit-Position: refs/heads/master@{#680060}

chrome/android/features/vr/java/AndroidManifest.xml

@@ -8,9 +8,17 @@
     featureSplit="vr">
 
     <dist:module
-        dist:onDemand="true"
+      dist:instant="false"
       dist:title="@string/vr_module_title">
       <dist:fusing dist:include="false" />
+      <dist:delivery>
+        <dist:install-time>
+          <dist:conditions>
+            <dist:device-feature dist:name="android.hardware.vr.high_performance" />
+          </dist:conditions>
+        </dist:install-time>
+        <dist:on-demand />
+      </dist:delivery>
     </dist:module>
 
     <application>

chrome/android/features/vr/java/AndroidManifest_chrome_modern.xml

+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright 2018 The Chromium Authors. All rights reserved.
+     Use of this source code is governed by a BSD-style license that can be
+     found in the LICENSE file. -->
+
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:dist="http://schemas.android.com/apk/distribution"
+    featureSplit="vr">
+
+    <dist:module
+        dist:onDemand="true"
+        dist:title="@string/vr_module_title">
+        <dist:fusing dist:include="false" />
+    </dist:module>
+
+    <application>
+    </application>
+</manifest>

chrome/android/features/vr/vr_module.gni

@@ -21,3 +21,7 @@ vr_module_desc = {
     loadable_module = "libvr_ui_dummy_lib.so"
   }
 }
+
+vr_chrome_modern_module_desc = vr_module_desc
+vr_chrome_modern_module_desc.android_manifest =
+    "//chrome/android/features/vr/java/AndroidManifest_chrome_modern.xml"

chrome/android/modules/chrome_feature_modules.gni

@@ -49,7 +49,7 @@ resource_packages_id_mapping = [
 # Modules shipped in Chrome Modern (Android L+).
 chrome_modern_module_descs = []
 if (enable_vr) {
-  chrome_modern_module_descs += [ vr_module_desc ]
+  chrome_modern_module_descs += [ vr_chrome_modern_module_desc ]
 }
 if (dfmify_dev_ui) {
   chrome_modern_module_descs += [ dev_ui_module_desc ]
@@ -57,6 +57,10 @@ if (dfmify_dev_ui) {
 
 # Modules shipped in Monochrome (Android N+).
 monochrome_module_descs = chrome_modern_module_descs
+if (enable_vr) {
+  monochrome_module_descs -= [ vr_chrome_modern_module_desc ]
+  monochrome_module_descs += [ vr_module_desc ]
+}
 if (enable_arcore) {
   monochrome_module_descs += [ ar_module_desc ]
 }