[Payments] Update autofill/payments spacings

chrome/android/java/res/layout/payment_request_editor_footer.xml

Index: chrome/android/java/res/layout/payment_request_editor_footer.xml
diff --git a/chrome/android/java/res/layout/payment_request_editor_footer.xml b/chrome/android/java/res/layout/payment_request_editor_footer.xml
new file mode 100644
index 0000000000000000000000000000000000000000..84741e6062871b72577f2b87491b0439e6d681a2
--- /dev/null
+++ b/chrome/android/java/res/layout/payment_request_editor_footer.xml
@@ -0,0 +1,14 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright 2016 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. -->
+
+<TextView
+        xmlns:android="http://schemas.android.com/apk/res/android"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_marginTop="8dp"
+        android:layout_marginBottom="16dp"
+        android:textColor="@color/descriptive_text_color"
+        android:textSize="12sp"
+        android:text="@string/payments_required_field_message" />