[Autofill] Put Autofill Profile Cleanup behing a feature flag.

components/autofill/core/browser/autofill_merge_unittest.cc

Index: components/autofill/core/browser/autofill_merge_unittest.cc
diff --git a/components/autofill/core/browser/autofill_merge_unittest.cc b/components/autofill/core/browser/autofill_merge_unittest.cc
index 64a55198252555189fb508515ed23552ac39ddd5..3b944a18031374048ee1c838e766fad451f9e572 100644
--- a/components/autofill/core/browser/autofill_merge_unittest.cc
+++ b/components/autofill/core/browser/autofill_merge_unittest.cc
@@ -8,6 +8,7 @@
 #include <memory>
 #include <vector>
 
+#include "base/feature_list.h"
 #include "base/files/file_enumerator.h"
 #include "base/files/file_path.h"
 #include "base/macros.h"
@@ -15,6 +16,7 @@
 #include "base/strings/string_split.h"
 #include "base/strings/string_util.h"
 #include "base/strings/utf_string_conversions.h"
+#include "components/autofill/core/browser/autofill_experiments.h"
 #include "components/autofill/core/browser/autofill_test_utils.h"
 #include "components/autofill/core/browser/autofill_type.h"
 #include "components/autofill/core/browser/country_names.h"
@@ -197,6 +199,12 @@ AutofillMergeTest::~AutofillMergeTest() {
 
 void AutofillMergeTest::SetUp() {
   test::DisableSystemServices(nullptr);
+
+  base::FeatureList::ClearInstanceForTesting();
+  std::unique_ptr<base::FeatureList> feature_list(new base::FeatureList);
+  feature_list->InitializeFromCommandLine(kAutofillProfileCleanup.name,
+                                          std::string());
+  base::FeatureList::SetInstance(std::move(feature_list));
 }
 
 void AutofillMergeTest::TearDown() {