[Payments] Format and validate phone number by using libphonenumber

chrome/browser/autofill/android/phone_number_util_android.h

Index: chrome/browser/autofill/android/phone_number_util_android.h
diff --git a/chrome/browser/autofill/android/phone_number_util_android.h b/chrome/browser/autofill/android/phone_number_util_android.h
new file mode 100644
index 0000000000000000000000000000000000000000..17c85c6983b120ca1b64dfee8f92731f06b95e3f
--- /dev/null
+++ b/chrome/browser/autofill/android/phone_number_util_android.h
@@ -0,0 +1,12 @@
+// 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_AUTOFILL_ANDROID_PHONE_NUMBER_UTIL_ANDROID_H_
+#define CHROME_BROWSER_AUTOFILL_ANDROID_PHONE_NUMBER_UTIL_ANDROID_H_
+
+#include <jni.h>
+
+bool RegisterPhoneNumberUtil(JNIEnv* env);
+
+#endif  // CHROME_BROWSER_AUTOFILL_ANDROID_PHONE_NUMBER_UTIL_ANDROID_H_