Tracks GVR version crossed with headset type using UMA.

chrome/android/java/src/org/chromium/chrome/browser/vr_shell/VrCoreInfo.java

+// Copyright 2017 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.
+
+package org.chromium.chrome.browser.vr_shell;
+
+import com.google.vr.ndk.base.Version;
+
+/**
+ * Container class to provide the version and the compatibility with Chromium of the installed
+ * VrCore.
+ */
+public class VrCoreInfo {
+    public final Version gvrVersion;

[ddorwin, 2017/05/24 07:31:37]

nit: Since this class is GVR-specific, "gvr" may be redundant. Or maybe there is
a technical difference.

[tiborg, 2017/05/25 00:06:02]

I wanted to communicate that this is the version of the GVR contained in VrCore
and not the version of VrCore itself.

+    @VrCoreCompatibility
+    public final int compatibility;
+
+    public VrCoreInfo(Version gvrVersion, int compatibility) {
+        this.gvrVersion = gvrVersion;
+        this.compatibility = compatibility;
+    }
+}