Add feature tag for high-performance VR devices.

Bug: 26667978
Change-Id: I299446555268b78f38177d89c71ff5340fdb0b8f

data/etc/android.hardware.vr.high_performance.xml

@@ -0,0 +1,21 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (C) 2016 The Android Open Source Project
+
+     Licensed under the Apache License, Version 2.0 (the "License");
+     you may not use this file except in compliance with the License.
+     You may obtain a copy of the License at
+
+          http://www.apache.org/licenses/LICENSE-2.0
+
+     Unless required by applicable law or agreed to in writing, software
+     distributed under the License is distributed on an "AS IS" BASIS,
+     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+     See the License for the specific language governing permissions and
+     limitations under the License.
+-->
+
+<!-- This is the set of features required for a VR-compatible device -->
+<permissions>
+    <feature name="android.software.vr.mode" />
+    <feature name="android.hardware.vr.high_performance" />
+</permissions>

data/etc/handheld_core_hardware.xml

@@ -52,6 +52,9 @@
 
     <!-- Feature to specify if the device supports a VR mode. -->
     <feature name="android.software.vr.mode" />
+    <!-- Devices with all optimizations required to be a "VR Ready" device that
+         pass all CTS tests for this feature must include feature
+         android.hardware.vr.high_performance -->
 
     <!-- devices with GPS must include android.hardware.location.gps.xml -->
     <!-- devices with an autofocus camera and/or flash must include either