[Autofill] Add user actions for checkout flow.

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 108899307a89da297da7e4975a206f77be48cf42..f184bba01022bc29b1ab8155e3651e6800bba70d 100644
--- a/components/autofill/core/browser/autofill_manager.cc
+++ b/components/autofill/core/browser/autofill_manager.cc
@@ -713,9 +713,11 @@ void AutofillManager::DidShowSuggestions(bool is_new_popup,
     }
 
     if (autofill_field->Type().group() == CREDIT_CARD)

[Mathieu, 2016/04/11 16:45:45]

we will need brackets if we have multiple lines in the block, no?

[sebsg, 2016/04/12 14:40:59]

Done.

-      credit_card_form_event_logger_->OnDidShowSuggestions();
+      credit_card_form_event_logger_->OnDidShowSuggestions(

[Mathieu, 2016/04/11 16:45:45]

FormEventLogger is constructed with |is_for_credit_card|, so you don't need
this?

[sebsg, 2016/04/12 14:40:59]

Done.

+          true /* is_credit_card */);
     else
-      address_form_event_logger_->OnDidShowSuggestions();
+      address_form_event_logger_->OnDidShowSuggestions(
+          false /* is_credit_card */);
   }
 }