[Payment Request] Displays Contact Info in the payment summary view

ios/chrome/browser/payments/payment_request_util.h

Index: ios/chrome/browser/payments/payment_request_util.h
diff --git a/ios/chrome/browser/payments/payment_request_util.h b/ios/chrome/browser/payments/payment_request_util.h
index 008fb50c975da6c1b4a5bead33acab398807ccbb..7491016c12fdee49d4bd517fa709cc3e48bc69cf 100644
--- a/ios/chrome/browser/payments/payment_request_util.h
+++ b/ios/chrome/browser/payments/payment_request_util.h
@@ -17,19 +17,27 @@ class PaymentRequest;
 
 namespace payment_request_util {
 
-// Helper function to get the name label from an autofill profile.
-NSString* NameLabelFromAutofillProfile(autofill::AutofillProfile* profile);
+// Helper function to get the name label from an autofill profile. Returns nil
+// if the name field is empty.
+NSString* GetNameLabelFromAutofillProfile(autofill::AutofillProfile* profile);
 
-// Helper function to get the address label from an autofill profile.
-NSString* AddressLabelFromAutofillProfile(autofill::AutofillProfile* profile);
+// Helper function to get the address label from an autofill profile. Returns
+// nil if the address field is empty.
+NSString* GetAddressLabelFromAutofillProfile(
+    autofill::AutofillProfile* profile);
 
 // Helper function to get the phone number label from an autofill profile.
-NSString* PhoneNumberLabelFromAutofillProfile(
+// Returns nil if the phone number field is empty.
+NSString* GetPhoneNumberLabelFromAutofillProfile(
     autofill::AutofillProfile* profile);
 
+// Helper function to get the email label from an autofill profile. Returns nil
+// if the email field is empty.
+NSString* GetEmailLabelFromAutofillProfile(autofill::AutofillProfile* profile);
+
 // Helper function to get an instance of web::PaymentAddress from an autofill
 // profile.
-web::PaymentAddress PaymentAddressFromAutofillProfile(
+web::PaymentAddress GetPaymentAddressFromAutofillProfile(
     autofill::AutofillProfile* profile);
 
 // Returns the title for the shipping section of the payment summary view given