[rac] Show amex specific cvc hint

chrome/browser/ui/autofill/autofill_dialog_view_delegate.h

Index: chrome/browser/ui/autofill/autofill_dialog_view_delegate.h
diff --git a/chrome/browser/ui/autofill/autofill_dialog_view_delegate.h b/chrome/browser/ui/autofill/autofill_dialog_view_delegate.h
index 8d5ad98fe1df3463ccb46740c2522fa2217fb071..5e1143f4bf9d1f89bf18859d8e7c96dddbc249c0 100644
--- a/chrome/browser/ui/autofill/autofill_dialog_view_delegate.h
+++ b/chrome/browser/ui/autofill/autofill_dialog_view_delegate.h
@@ -124,6 +124,18 @@ class AutofillDialogViewDelegate {
   virtual gfx::Image IconForField(ServerFieldType type,
                                   const string16& user_input) const = 0;
 
+  // Returns true if the icon of this field type |depdendent_type| depends on
+  // the value of another field. For example, returns true for CVC, because CVC
+  // hint images depend on credit card type.
+  virtual bool IsIconDependentField(ServerFieldType dependent_type) const = 0;
+
+  // Returns true if the value of this field type |dependency_type| controls the
+  // icon of another field. Sets |dependent_type| to the type of the dependent
+  // field. For example, returns true for credit card number, because some
+  // credit card types have different CVC hint images.
+  virtual bool IsIconDependencyField(ServerFieldType dependency_type,
+                                     ServerFieldType* dependent_type) const = 0;
+
   // Decides whether input of |value| is valid for a field of type |type|. If
   // valid, the returned string will be empty. Otherwise it will contain an
   // error message.