AutoFill credit card settings dialog should display obfuscated number in edit field

chrome/browser/autofill/autofill_credit_card_sheet_controller_mac.h

Index: chrome/browser/autofill/autofill_credit_card_sheet_controller_mac.h
diff --git a/chrome/browser/autofill/autofill_credit_card_sheet_controller_mac.h b/chrome/browser/autofill/autofill_credit_card_sheet_controller_mac.h
index 6fa281df6d95a697bac179e0872d38ef096f52bd..dd9461f85f4c0c3e553ccd63907040863df89c56 100644
--- a/chrome/browser/autofill/autofill_credit_card_sheet_controller_mac.h
+++ b/chrome/browser/autofill/autofill_credit_card_sheet_controller_mac.h
@@ -33,6 +33,10 @@ typedef NSInteger AutoFillCreditCardMode;
   // "New credit card" or "Edit credit card" depending on context.
   IBOutlet NSTextField* caption_;
 
+  // The credit card number field.  This is here for unit testing purposes.
+  // The text of this field is obfuscated until edited.
+  IBOutlet NSTextField* creditCardNumberField_;
+
   // The primary model for this controller.  The model is instantiated
   // from within |initWithCreditCard:|.  We do not hold it as a scoped_nsobject
   // because it is exposed as a KVO compliant property.
@@ -79,4 +83,9 @@ typedef NSInteger AutoFillCreditCardMode;
 
 @end
 
+// Interface exposed for unit testing.
+@interface AutoFillCreditCardSheetController (ExposedForUnitTests)
+- (NSTextField*)creditCardNumberField;
+@end
+
 #endif // CHROME_BROWSER_AUTOFILL_AUTOFILL_CREDIT_CARD_SHEET_CONTROLLER_MAC_