[Autofill] Add upstreaming UKM

components/autofill/core/browser/autofill_client.h

Index: components/autofill/core/browser/autofill_client.h
diff --git a/components/autofill/core/browser/autofill_client.h b/components/autofill/core/browser/autofill_client.h
index 3960f44fdbb46f27f86e410fc7309cd65b55049a..d36f0026ffca6da8b3f830375f1be2af3514a457 100644
--- a/components/autofill/core/browser/autofill_client.h
+++ b/components/autofill/core/browser/autofill_client.h
@@ -36,6 +36,10 @@ namespace syncer {
 class SyncService;
 }
 
+namespace ukm {
+class UkmService;
+}
+
 namespace autofill {
 
 class AutofillPopupDelegate;
@@ -105,6 +109,9 @@ class AutofillClient {
   // Gets the RapporServiceImpl associated with the client (for metrics).
   virtual rappor::RapporServiceImpl* GetRapporServiceImpl() = 0;
 
+  // Gets the UKM service assiciated with this client (for metrics).
+  virtual ukm::UkmService* GetUkmService() = 0;
+
   // Causes the Autofill settings UI to be shown.
   virtual void ShowAutofillSettings() = 0;