[Sync] Stop purging sync data on restart for users who haven't finished setup.

components/browser_sync/browser/profile_sync_service_unittest.cc

 // Copyright (c) 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 "components/browser_sync/browser/profile_sync_service.h"
 
 #include <memory>
 #include <utility>
 #include <vector>
 
@@ skipping 397 matching lines @@
                           new base::FundamentalValue(false));
   IssueTestTokens();
   CreateService(ProfileSyncService::AUTO_START);
   ExpectDataTypeManagerCreation(1, GetDefaultConfigureCalledCallback());
   ExpectSyncBackendHostCreation(1);
   InitializeForNthSync();
   EXPECT_FALSE(service()->IsManaged());
   EXPECT_TRUE(service()->IsSyncActive());
 }
 
+// Verify that an initialization where first setup is not complete does not
+// purge preferences and/or the directory.
+TEST_F(ProfileSyncServiceTest, NeedsConfirmation) {
+  prefs()->SetManagedPref(sync_driver::prefs::kSyncManaged,
+                          new base::FundamentalValue(false));
+  IssueTestTokens();
+  CreateService(ProfileSyncService::MANUAL_START);
+  ExpectSyncBackendHostCreation(1);
+  sync_driver::SyncPrefs sync_prefs(prefs());
+  base::Time now = base::Time::Now();
+  sync_prefs.SetLastSyncedTime(now);
+  sync_prefs.SetKeepEverythingSynced(true);
+  service()->Initialize();
+  EXPECT_FALSE(service()->IsSyncActive());
+
+  // The last sync time shouldn't be cleared.
+  // TODO(zea): figure out a way to check that the directory itself wasn't
+  // cleared.
+  EXPECT_EQ(now, sync_prefs.GetLastSyncedTime());
+}
+
 // Verify that the SetSetupInProgress function call updates state
 // and notifies observers.
 TEST_F(ProfileSyncServiceTest, SetupInProgress) {
   CreateService(ProfileSyncService::AUTO_START);
   InitializeForFirstSync();
 
   TestSyncServiceObserver observer(service());
   service()->AddObserver(&observer);
 
   auto sync_blocker = service()->GetSetupInProgressHandle();
@@ skipping 516 matching lines @@
 // dereferenced in OnSyncCycleCompleted. The fix is to use find() to check if
 // entry for sessions exists in map.
 TEST_F(ProfileSyncServiceTest, ValidPointersInDTCMap) {
   CreateService(ProfileSyncService::AUTO_START);
   service()->OnSessionRestoreComplete();
   service()->OnSyncCycleCompleted();
 }
 
 }  // namespace
 }  // namespace browser_sync