sync: add a SyncSessionJobPurpose for clearing sync user data.

chrome/browser/sync/sessions/test_util.cc

 // Copyright (c) 2011 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/sessions/test_util.h"
 
 namespace browser_sync {
 namespace sessions {
 namespace test_util {
 
-void SimulateHasMoreToSync(sessions::SyncSession* session) {
+void SimulateHasMoreToSync(sessions::SyncSession* session,
+                           SyncerStep begin, SyncerStep end) {
   session->status_controller()->update_conflicts_resolved(true);
   ASSERT_TRUE(session->HasMoreToSync());
 }
 
-void SimulateDownloadUpdatesFailed(sessions::SyncSession* session) {
+void SimulateDownloadUpdatesFailed(sessions::SyncSession* session,
+                                   SyncerStep begin, SyncerStep end) {
   // Note that a non-zero value of changes_remaining once a session has
   // completed implies that the Syncer was unable to exhaust this count during
   // the GetUpdates cycle.  This is an indication that an error occurred.
   session->status_controller()->set_num_server_changes_remaining(1);
 }
 
-void SimulateCommitFailed(sessions::SyncSession* session) {
+void SimulateCommitFailed(sessions::SyncSession* session,
+                          SyncerStep begin, SyncerStep end) {
   // Note that a non-zero number of unsynced handles once a session has
   // completed implies that the Syncer was unable to make forward progress
   // during a commit, indicating an error occurred.
   // See implementation of SyncSession::HasMoreToSync.
   std::vector<int64> handles;
   handles.push_back(1);
   session->status_controller()->set_unsynced_handles(handles);
 }
 
-void SimulateSuccess(sessions::SyncSession* session) {
+void SimulateSuccess(sessions::SyncSession* session,
+                     SyncerStep begin, SyncerStep end) {
   if (session->HasMoreToSync()) {
     ADD_FAILURE() << "Shouldn't have more to sync";
   }
   ASSERT_EQ(0U, session->status_controller()->num_server_changes_remaining());
   ASSERT_EQ(0U, session->status_controller()->unsynced_handles().size());
 }
 
 void SimulateThrottledImpl(sessions::SyncSession* session,
     const base::TimeDelta& delta) {
   session->delegate()->OnSilencedUntil(base::TimeTicks::Now() + delta);
 }
 
 void SimulatePollIntervalUpdateImpl(sessions::SyncSession* session,
     const base::TimeDelta& new_poll) {
   session->delegate()->OnReceivedLongPollIntervalUpdate(new_poll);
 }
 
 }  // namespace test_util
 }  // namespace sessions
 }  // namespace browser_sync