[Autofill] Implement Credit Card Signin Promo

components/autofill/core/browser/autofill_manager.cc

Index: components/autofill/core/browser/autofill_manager.cc
diff --git a/components/autofill/core/browser/autofill_manager.cc b/components/autofill/core/browser/autofill_manager.cc
index f06b605f747b43396946ba3dabb5e3505202768a..a90e4b916df3c4530a43d9c3ce68b8dda41b30c8 100644
--- a/components/autofill/core/browser/autofill_manager.cc
+++ b/components/autofill/core/browser/autofill_manager.cc
@@ -272,6 +272,20 @@ bool AutofillManager::ShouldShowScanCreditCard(const FormData& form,
                                  base::ASCIIToUTF16("0123456789"));
 }
 
+bool AutofillManager::ShouldShowCreditCardSigninPromo(
+    const FormData& form,
+    const FormFieldData& field) {
+  // Check whether we are dealing with a credit card field.
+  AutofillField* autofill_field = GetAutofillField(form, field);
+  if (!autofill_field || autofill_field->Type().group() != CREDIT_CARD) {

[Evan Stade, 2016/07/08 17:34:58]

nit: return autofill_field && autofill_field->Type().group() == CREDIT_CARD &&
client_->ShouldShowSigninPromo();

[Mathieu, 2016/07/08 18:10:02]

Neater thanks

+    return false;
+  }
+
+  // Will check if the user is signed in and if it's appropriate to show the
+  // promo (e.g. the platform is supported).
+  return client_->ShouldShowSigninPromo();
+}
+
 void AutofillManager::OnFormsSeen(const std::vector<FormData>& forms,
                                   const TimeTicks& timestamp) {
   if (!IsValidFormDataVector(forms))