Tracks GVR version crossed with headset type using UMA.

chrome/browser/android/vr_shell/BUILD.gn

Index: chrome/browser/android/vr_shell/BUILD.gn
diff --git a/chrome/browser/android/vr_shell/BUILD.gn b/chrome/browser/android/vr_shell/BUILD.gn
index bc0176139a60b80cb89718aa823fc73d29a57672..0ebc00fd414e04740a7c538163280d097125ef37 100644
--- a/chrome/browser/android/vr_shell/BUILD.gn
+++ b/chrome/browser/android/vr_shell/BUILD.gn
@@ -62,12 +62,16 @@ if (current_cpu == "arm" || current_cpu == "arm64") {
       "vr_controller.h",
       "vr_controller_model.cc",
       "vr_controller_model.h",
+      "vr_core_info.cc",
+      "vr_core_info.h",
       "vr_gl_thread.cc",
       "vr_gl_thread.h",
       "vr_gl_util.cc",
       "vr_gl_util.h",
       "vr_input_manager.cc",
       "vr_input_manager.h",
+      "vr_metrics_util.cc",
+      "vr_metrics_util.h",
       "vr_shell.cc",
       "vr_shell.h",
       "vr_shell_delegate.cc",
@@ -114,6 +118,7 @@ if (current_cpu == "arm" || current_cpu == "arm64") {
 
   generate_jni("vr_shell_jni_headers") {
     sources = [
+      "//chrome/android/java/src/org/chromium/chrome/browser/vr_shell/VrCoreInfo.java",
       "//chrome/android/java/src/org/chromium/chrome/browser/vr_shell/VrShellDelegate.java",
       "//chrome/android/java/src/org/chromium/chrome/browser/vr_shell/VrShellImpl.java",
     ]