[Sync] Add ClearServerData support to Sync Scheduler

sync/engine/syncer.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 "sync/engine/syncer.h"
 
 #include "base/auto_reset.h"
 #include "base/location.h"
 #include "base/logging.h"
 #include "base/message_loop/message_loop.h"
 #include "base/time/time.h"
 #include "base/trace_event/trace_event.h"
 #include "build/build_config.h"
 #include "sync/engine/apply_control_data_updates.h"
+#include "sync/engine/clear_server_data.h"
 #include "sync/engine/commit.h"
 #include "sync/engine/commit_processor.h"
 #include "sync/engine/conflict_resolver.h"
 #include "sync/engine/get_updates_delegate.h"
 #include "sync/engine/get_updates_processor.h"
 #include "sync/engine/net/server_connection_manager.h"
 #include "sync/engine/syncer_types.h"
 #include "sync/internal_api/public/base/cancelation_signal.h"
 #include "sync/internal_api/public/base/unique_position.h"
 #include "sync/internal_api/public/util/syncer_error.h"
@@ skipping 190 matching lines @@
     bool success = !sessions::HasSyncerError(
           session->status_controller().model_neutral_state());
     if (success && source == sync_pb::GetUpdatesCallerInfo::PERIODIC)
       session->mutable_status_controller()->UpdatePollTime();
     return success;
   } else {
     return false;
   }
 }
 
+bool Syncer::PostClearServerData(SyncSession* session) {
+  DCHECK(session);
+  ClearServerData clear_server_data(session->context()->account_name());
+  const SyncerError post_result = clear_server_data.SendRequest(session);
+  return post_result == SYNCER_OK;
+}
+
 }  // namespace syncer