Add feature declarations for a VR mode.

Bug: 22855417

Change-Id: I147c910fdb13969fa6cb49a2caedf55634a4c7f1
diff --git a/data/etc/handheld_core_hardware.xml b/data/etc/handheld_core_hardware.xml
index 50cbe9e..5edf0e8 100644
--- a/data/etc/handheld_core_hardware.xml
+++ b/data/etc/handheld_core_hardware.xml
@@ -50,6 +50,9 @@
     <!-- Feature to specify if the device support managed users. -->
     <feature name="android.software.managed_users" />
 
+    <!-- Feature to specify if the device supports a VR mode. -->
+    <feature name="android.software.vr.mode" />
+
     <!-- devices with GPS must include android.hardware.location.gps.xml -->
     <!-- devices with an autofocus camera and/or flash must include either
          android.hardware.camera.autofocus.xml or