[Sync] Have SBH tell SyncManager which types to purge

chrome/browser/sync/test_profile_sync_service.h

 // 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.
 
 #ifndef CHROME_BROWSER_SYNC_TEST_PROFILE_SYNC_SERVICE_H_
 #define CHROME_BROWSER_SYNC_TEST_PROFILE_SYNC_SERVICE_H_
 
 #include <string>
 
 #include "base/callback.h"
@@ skipping 43 matching lines @@
   virtual ~SyncBackendHostForProfileSyncTest();
 
   MOCK_METHOD1(RequestNudge, void(const tracked_objects::Location&));
 
   virtual void UpdateCredentials(
       const syncer::SyncCredentials& credentials) OVERRIDE;
 
   virtual void RequestConfigureSyncer(
       syncer::ConfigureReason reason,
       syncer::ModelTypeSet to_download,
+      syncer::ModelTypeSet to_purge,
       syncer::ModelTypeSet to_journal,
       syncer::ModelTypeSet to_unapply,
       syncer::ModelTypeSet to_ignore,
       const syncer::ModelSafeRoutingInfo& routing_info,
       const base::Callback<void(syncer::ModelTypeSet,
                                 syncer::ModelTypeSet)>& ready_task,
       const base::Closure& retry_callback) OVERRIDE;
 
   virtual void HandleSyncManagerInitializationOnFrontendLoop(
       const syncer::WeakHandle<syncer::JsBackend>& js_backend,
@@ skipping 108 matching lines @@
   bool synchronous_sync_configuration_;
 
   base::Closure callback_;
   bool set_initial_sync_ended_on_init_;
 
   bool fail_initial_download_;
   syncer::StorageOption storage_option_;
 };
 
 #endif  // CHROME_BROWSER_SYNC_TEST_PROFILE_SYNC_SERVICE_H_