[Payments] Add PaymentRequest checkout funnel UKMs.

chrome/browser/payments/android/chrome_payments_jni_registrar.h

Index: chrome/browser/payments/android/chrome_payments_jni_registrar.h
diff --git a/chrome/browser/payments/android/chrome_payments_jni_registrar.h b/chrome/browser/payments/android/chrome_payments_jni_registrar.h
new file mode 100644
index 0000000000000000000000000000000000000000..92d3fa13182a0ab03692ef58b9000aa85404dcaa
--- /dev/null
+++ b/chrome/browser/payments/android/chrome_payments_jni_registrar.h
@@ -0,0 +1,19 @@
+// 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_PAYMENTS_ANDROID_CHROME_PAYMENTS_JNI_REGISTRAR_H_
+#define CHROME_BROWSER_PAYMENTS_ANDROID_CHROME_PAYMENTS_JNI_REGISTRAR_H_
+
+#include <jni.h>
+
+namespace payments {
+namespace android {
+
+// Register all JNI bindings necessary for the chrome payments classes.
+bool RegisterChromePayments(JNIEnv* env);
+
+}  // namespace android
+}  // namespace payments
+
+#endif  // CHROME_BROWSER_PAYMENTS_ANDROID_CHROME_PAYMENTS_JNI_REGISTRAR_H_