enable modifiers for native apps

chrome/test/data/payments/modifier.js

Index: chrome/test/data/payments/modifier.js
diff --git a/chrome/test/data/payments/modifier.js b/chrome/test/data/payments/modifier.js
deleted file mode 100644
index 4fff18b6c539289cc5a121163a18bb290112c8ed..0000000000000000000000000000000000000000
--- a/chrome/test/data/payments/modifier.js
+++ /dev/null
@@ -1,44 +0,0 @@
-/*
- * 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.
- */
-
-/**
- * Invokes the PaymentRequest with a modifier that contains the bare mininum of
- * required fields.
- */
-function buy() { // eslint-disable-line no-unused-vars
-  try {
-    new PaymentRequest(
-        [{
-          supportedMethods: ['foo'],
-        }], {
-          total: {
-            label: 'Total',
-            amount: {
-              currency: 'USD',
-              value: '5.00',
-            },
-          },
-          modifiers: [{
-            supportedMethods: ['foo'],
-          }],
-        })
-      .show()
-      .then(function(response) {
-        response.complete()
-          .then(function() {
-            print(complete);
-          })
-          .catch(function(error) {
-            print(error);
-          });
-      })
-      .catch(function(error) {
-        print(error);
-      });
-  } catch (error) {
-    print(error.message);
-  }
-}