Revert of [Autofill] Enable Autofill UKM by default.

components/autofill/core/browser/autofill_metrics.cc

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "components/autofill/core/browser/autofill_metrics.h"
 
 #include <algorithm>
 #include <utility>
 #include <vector>
 
@@ skipping 775 matching lines @@
 
   LogUkm(ukm_service, url, internal::kUKMDeveloperEngagementEntryName, metrics);
 }
 
 // static
 bool AutofillMetrics::LogUkm(
     ukm::UkmService* ukm_service,
     const GURL& url,
     const std::string& ukm_entry_name,
     const std::vector<std::pair<const char*, int>>& metrics) {
-  if (!ukm_service || !url.is_valid() || metrics.empty()) {
+  if (!IsUkmLoggingEnabled() || !ukm_service || !url.is_valid() ||
+      metrics.empty()) {
     return false;
   }
 
   int32_t source_id = ukm_service->GetNewSourceID();
   ukm_service->UpdateSourceURL(source_id, url);
   std::unique_ptr<ukm::UkmEntryBuilder> builder =
       ukm_service->GetEntryBuilder(source_id, ukm_entry_name.c_str());
 
   for (auto it = metrics.begin(); it != metrics.end(); ++it) {
     builder->AddMetric(it->first, it->second);
@@ skipping 220 matching lines @@
     name += ".WithBothServerAndLocalData";
   LogUMAHistogramEnumeration(name, event, NUM_FORM_EVENTS);
 }
 
 AutofillMetrics::FormInteractionsUkmLogger::FormInteractionsUkmLogger(
     ukm::UkmService* ukm_service)
     : ukm_service_(ukm_service) {}
 
 void AutofillMetrics::FormInteractionsUkmLogger::OnFormsParsed(
     const GURL& url) {
-  if (ukm_service_ == nullptr)
+  if (!IsUkmLoggingEnabled() || ukm_service_ == nullptr)
     return;
 
   url_ = url;
   form_parsed_timestamp_ = base::TimeTicks::Now();
 }
 
 void AutofillMetrics::FormInteractionsUkmLogger::LogInteractedWithForm(
     bool is_for_credit_card,
     size_t local_record_type_count,
     size_t server_record_type_count) {
@@ skipping 97 matching lines @@
 }
 
 void AutofillMetrics::FormInteractionsUkmLogger::UpdateSourceURL(
     const GURL& url) {
   url_ = url;
   if (CanLog())
     ukm_service_->UpdateSourceURL(source_id_, url_);
 }
 
 bool AutofillMetrics::FormInteractionsUkmLogger::CanLog() const {
-  return ukm_service_ && url_.is_valid();
+  return IsUkmLoggingEnabled() && ukm_service_ && url_.is_valid();
 }
 
 int64_t
 AutofillMetrics::FormInteractionsUkmLogger::MillisecondsSinceFormParsed()
     const {
   DCHECK(!form_parsed_timestamp_.is_null());
   return (base::TimeTicks::Now() - form_parsed_timestamp_).InMilliseconds();
 }
 
 void AutofillMetrics::FormInteractionsUkmLogger::GetNewSourceID() {
   source_id_ = ukm_service_->GetNewSourceID();
   ukm_service_->UpdateSourceURL(source_id_, url_);
 }
 
 }  // namespace autofill