[Autofill] Run autofill-profile de-dupe after sync starts if sync is enabled.

components/browser_sync/browser/profile_sync_service_autofill_unittest.cc

 // Copyright 2012 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 <stddef.h>
 #include <stdint.h>
 
 #include <memory>
 #include <set>
 #include <string>
@@ skipping 82 matching lines @@
 using testing::Not;
 using testing::SetArgumentPointee;
 using testing::Return;
 
 namespace {
 
 void RegisterAutofillPrefs(user_prefs::PrefRegistrySyncable* registry) {
   registry->RegisterBooleanPref(autofill::prefs::kAutofillEnabled, true);
   registry->RegisterBooleanPref(autofill::prefs::kAutofillWalletImportEnabled,
                                 true);
+  registry->RegisterIntegerPref(autofill::prefs::kAutofillLastVersionDeduped,
+                                true);
 }
 
 void RunAndSignal(const base::Closure& cb, WaitableEvent* event) {
   cb.Run();
   event->Signal();
 }
 
 AutofillEntry MakeAutofillEntry(const char* name,
                                 const char* value,
                                 int time_shift0,
@@ skipping 1348 matching lines @@
   std::vector<AutofillEntry> sync_entries;
   std::vector<AutofillProfile> sync_profiles;
   ASSERT_TRUE(GetAutofillEntriesFromSyncDB(&sync_entries, &sync_profiles));
   EXPECT_EQ(3U, sync_entries.size());
   EXPECT_EQ(0U, sync_profiles.size());
   for (size_t i = 0; i < sync_entries.size(); i++) {
     DVLOG(1) << "Entry " << i << ": " << sync_entries[i].key().name()
              << ", " << sync_entries[i].key().value();
   }
 }