Reland - [Autofill] Enable Autofill UKM by default.

components/autofill/core/browser/autofill_experiments.h

Index: components/autofill/core/browser/autofill_experiments.h
diff --git a/components/autofill/core/browser/autofill_experiments.h b/components/autofill/core/browser/autofill_experiments.h
index 5e3ef073a721fedc6e6985eb3384cf5d40a9ebd0..6a646c8f715b6679996b126999471d9369bf620f 100644
--- a/components/autofill/core/browser/autofill_experiments.h
+++ b/components/autofill/core/browser/autofill_experiments.h
@@ -29,7 +29,6 @@ extern const base::Feature kAutofillCreditCardAssist;
 extern const base::Feature kAutofillScanCardholderName;
 extern const base::Feature kAutofillCreditCardPopupLayout;
 extern const base::Feature kAutofillCreditCardLastUsedDateDisplay;
-extern const base::Feature kAutofillUkmLogging;
 extern const base::Feature kAutofillUpstreamRequestCvcIfMissing;
 extern const base::Feature kAutofillUpstreamUseAutofillProfileComparatorForName;
 extern const base::Feature kAutofillUpstreamUseNotRecentlyUsedAutofillProfile;
@@ -105,9 +104,6 @@ void ModifyAutofillCreditCardSuggestion(struct Suggestion* suggestion);
 // layout.
 unsigned int GetPopupMargin();
 
-// Returns whether the feature to log UKMs is enabled.
-bool IsUkmLoggingEnabled();
-
 // Returns whether the experiment is enabled where Chrome Upstream requests CVC
 // in the offer to save bubble if it was not detected during the checkout flow.
 bool IsAutofillUpstreamRequestCvcIfMissingExperimentEnabled();