[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 a0d7514073a9612eb6f82f1b25cfc1e5a75d9fec..f36ba6963e01336a0cd2d0c1a86043097b7281fd 100644
--- a/components/autofill/core/browser/autofill_manager.h
+++ b/components/autofill/core/browser/autofill_manager.h
@@ -411,7 +411,7 @@ class AutofillManager : public AutofillDownloadManager::Observer,
       const FormFieldData& field,
       const AutofillField& autofill_field) const;
 
-  // Returns a list of values from the stored credit cards that match |type| and
+  // Returns a list of values from the stored credit cards that match field type
   // the value of |field| and returns the labels of the matching credit cards.

[Jared Saul, 2017/05/24 18:06:35]

nit: "match field type the value of |field|" reads weird.  Should the first
'field type' be removed?  If so, s/match/matches.

[jiahuiguo, 2017/05/24 21:27:33]

Acknowledged. I just reverted this change, thanks for catching this.

   std::vector<Suggestion> GetCreditCardSuggestions(
       const FormFieldData& field,