Tracks GVR version crossed with headset type using UMA.

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

Index: chrome/android/java/src/org/chromium/chrome/browser/vr_shell/VrCoreInfo.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/vr_shell/VrCoreInfo.java b/chrome/android/java/src/org/chromium/chrome/browser/vr_shell/VrCoreInfo.java
new file mode 100644
index 0000000000000000000000000000000000000000..97fc822789ab535f3c21e93682221e592aa6f995
--- /dev/null
+++ b/chrome/android/java/src/org/chromium/chrome/browser/vr_shell/VrCoreInfo.java
@@ -0,0 +1,34 @@
+// 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;
+
+import org.chromium.base.annotations.JNINamespace;
+
+/**
+ * Container class to provide the version and the compatibility with Chromium of the installed
+ * VrCore.
+ */
+@JNINamespace("vr_shell")
+public class VrCoreInfo {
+    public final Version gvrVersion;
+    @VrCoreCompatibility
+    public final int compatibility;
+
+    public VrCoreInfo(Version gvrVersion, int compatibility) {
+        this.gvrVersion = gvrVersion;
+        this.compatibility = compatibility;
+    }
+
+    public long makeNativeVrCoreInfo() {
+        return (gvrVersion == null) ? nativeInit(0, 0, 0, compatibility)
+                                    : nativeInit(gvrVersion.majorVersion, gvrVersion.minorVersion,
+                                              gvrVersion.patchVersion, compatibility);
+    }
+
+    private native long nativeInit(
+            int majorVersion, int minorVersion, int patchVersion, int compatibility);
+}