[Payments] Allow international phone from different country in shipping editor.

components/payments/core/payment_request_data_util.cc

Index: components/payments/core/payment_request_data_util.cc
diff --git a/components/payments/core/payment_request_data_util.cc b/components/payments/core/payment_request_data_util.cc
index b2b3fccdd0ad6c359291e69d41a6304e4bbe37c2..9973b91bea76b51c2d30bc85fa60dae05ccefa22 100644
--- a/components/payments/core/payment_request_data_util.cc
+++ b/components/payments/core/payment_request_data_util.cc
@@ -155,10 +155,31 @@ void ParseBasicCardSupportedNetworks(
 base::string16 GetFormattedPhoneNumberForDisplay(
     const autofill::AutofillProfile& profile,
     const std::string& locale) {
+  // Since the "+" is removed for some country's phone numbers, try to add a "+"
+  // and see if it is a valid phone number for a country.
+  // Having two "+" in front of a number has no effect on the formatted number.
+  // The reason for this is international phone numbers for another country. For
+  // example, without adding a "+", the US number 1-415-123-1234 for an AU
+  // address would be wrongly formatted as +61 1-415-123-1234 which is invalid.
+  std::string phone = base::UTF16ToUTF8(profile.GetInfo(
+      autofill::AutofillType(autofill::PHONE_HOME_WHOLE_NUMBER), locale));
+  std::string tentative_intl_phone = "+" + phone;
+
+  autofill::i18n::PhoneObject phone_obj(
+      base::UTF8ToUTF16(phone), GetCountryCodeWithFallback(&profile, locale));
+  autofill::i18n::PhoneObject tentative_intl_phone_obj(
+      base::UTF8ToUTF16(tentative_intl_phone),
+      GetCountryCodeWithFallback(&profile, locale));
+
+  // Always favor the tentative international phone number if it's determined as
+  // being a valid number.
+  if (!tentative_intl_phone_obj.region().empty()) {
+    return base::UTF8ToUTF16(FormatPhoneForDisplay(
+        tentative_intl_phone, GetCountryCodeWithFallback(&profile, locale)));
+  }
+
   return base::UTF8ToUTF16(FormatPhoneForDisplay(
-      base::UTF16ToUTF8(profile.GetInfo(
-          autofill::AutofillType(autofill::PHONE_HOME_WHOLE_NUMBER), locale)),
-      GetCountryCodeWithFallback(&profile, locale)));
+      phone, GetCountryCodeWithFallback(&profile, locale)));
 }
 
 std::string FormatPhoneForDisplay(const std::string& phone_number,