Tracks GVR version crossed with headset type using UMA.

chrome/browser/android/vr_shell/vr_metrics_util.h

Index: chrome/browser/android/vr_shell/vr_metrics_util.h
diff --git a/chrome/browser/android/vr_shell/vr_metrics_util.h b/chrome/browser/android/vr_shell/vr_metrics_util.h
new file mode 100644
index 0000000000000000000000000000000000000000..3075b91ebd96383dac00d9d708d79074a972abc0
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+++ b/chrome/browser/android/vr_shell/vr_metrics_util.h
@@ -0,0 +1,39 @@
+// 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.
+
+#ifndef CHROME_BROWSER_ANDROID_VR_SHELL_VR_METRICS_UTIL_H_
+#define CHROME_BROWSER_ANDROID_VR_SHELL_VR_METRICS_UTIL_H_
+
+#include "base/macros.h"
+
+#include "chrome/browser/android/vr_shell/vr_core_info.h"
+#include "third_party/gvr-android-sdk/src/libraries/headers/vr/gvr/capi/include/gvr.h"
+#include "third_party/gvr-android-sdk/src/libraries/headers/vr/gvr/capi/include/gvr_types.h"
+
+namespace vr_shell {
+
+enum class ViewerType {
+  UNKNOWN_TYPE = 0,
+  CARDBOARD = 1,
+  DAYDREAM = 2,
+  VIEWER_TYPE_MAX,
+};
+
+class VrMetricsUtil {
+ public:
+  static void LogGvrVersionForVrViewerType(gvr_context* context,
+                                           const VrCoreInfo& vr_core_info);
+  static void LogVrViewerType(gvr_context* context);
+
+ private:
+  static ViewerType GetVrViewerType(gvr_context* context);
+
+  static bool has_logged_vr_runtime_version_;
+
+  DISALLOW_IMPLICIT_CONSTRUCTORS(VrMetricsUtil);
+};
+
+}  // namespace vr_shell
+
+#endif  // CHROME_BROWSER_ANDROID_VR_SHELL_VR_METRICS_UTIL_H_