sync: Remove dead code related to ClearUserData

chrome/browser/sync/glue/sync_backend_host_impl.cc

 // Copyright 2013 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 "chrome/browser/sync/glue/sync_backend_host_impl.h"
 
 #include "base/command_line.h"
 #include "chrome/browser/chrome_notification_types.h"
 #include "chrome/browser/invalidation/invalidation_service.h"
 #include "chrome/browser/invalidation/invalidation_service_factory.h"
@@ skipping 707 matching lines @@
 void SyncBackendHostImpl::HandlePassphraseTypeChangedOnFrontendLoop(
     syncer::PassphraseType type,
     base::Time explicit_passphrase_time) {
   DCHECK_EQ(base::MessageLoop::current(), frontend_loop_);
   DVLOG(1) << "Passphrase type changed to "
            << syncer::PassphraseTypeToString(type);
   cached_passphrase_type_ = type;
   cached_explicit_passphrase_time_ = explicit_passphrase_time;
 }
 
-void SyncBackendHostImpl::HandleStopSyncingPermanentlyOnFrontendLoop() {
-  if (!frontend_)
-    return;
-  frontend_->OnStopSyncingPermanently();
-}
-
 void SyncBackendHostImpl::HandleConnectionStatusChangeOnFrontendLoop(
     syncer::ConnectionStatus status) {
   if (!frontend_)
     return;
 
   DCHECK_EQ(base::MessageLoop::current(), frontend_loop_);
 
   DVLOG(1) << "Connection status changed: "
            << syncer::ConnectionStatusToString(status);
   frontend_->OnConnectionStatusChange(status);
 }
 
 base::MessageLoop* SyncBackendHostImpl::GetSyncLoopForTesting() {
   return registrar_->sync_thread()->message_loop();
 }
 
 }  // namespace browser_sync
 
 #undef SDVLOG
 
 #undef SLOG