[Autofill] UKM for suggestions polled field.

components/autofill/core/browser/autofill_manager.h

Index: components/autofill/core/browser/autofill_manager.h
diff --git a/components/autofill/core/browser/autofill_manager.h b/components/autofill/core/browser/autofill_manager.h
index 83915b57441687a54bf9be6268efc5af1f076f3c..7545a560ef6fb793fbca4582c6771f59a4bdce66 100644
--- a/components/autofill/core/browser/autofill_manager.h
+++ b/components/autofill/core/browser/autofill_manager.h
@@ -60,7 +60,6 @@ class AutofillField;
 class AutofillClient;
 class AutofillManagerTestDelegate;
 class AutofillProfile;
-class AutofillType;
 class CreditCard;
 class FormStructureBrowserTest;
 
@@ -415,7 +414,7 @@ class AutofillManager : public AutofillDownloadManager::Observer,
   // the value of |field| and returns the labels of the matching credit cards.
   std::vector<Suggestion> GetCreditCardSuggestions(
       const FormFieldData& field,
-      const AutofillType& type) const;
+      const AutofillField& autofill_field) const;
 
   // Parses the forms using heuristic matching and querying the Autofill server.
   void ParseForms(const std::vector<FormData>& forms);