Made sync code build and pass unit tests on OS X.

chrome/browser/sync/engine/syncer.cc

 // Copyright (c) 2009 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 entry.
 
 #include "chrome/browser/sync/engine/syncer.h"
 
 #include "base/format_macros.h"
 #include "chrome/browser/sync/engine/apply_updates_command.h"
 #include "chrome/browser/sync/engine/build_and_process_conflict_sets_command.h"
 #include "chrome/browser/sync/engine/build_commit_command.h"
@@ skipping 100 matching lines @@
 }
 
 void Syncer::SyncShare(SyncerSession* session,
                        const SyncerStep first_step,
                        const SyncerStep last_step) {
   SyncerStep current_step = first_step;
 
   // Reset silenced_until_, it is the callers responsibility to honor throttles.
   silenced_until_ = session->silenced_until();
 
-  SyncerStep next_step;
+  SyncerStep next_step = current_step;
   while (!ExitRequested()) {
     switch (current_step) {
       case SYNCER_BEGIN:
         LOG(INFO) << "Syncer Begin";
         next_step = DOWNLOAD_UPDATES;
         break;
       case DOWNLOAD_UPDATES: {
         LOG(INFO) << "Downloading Updates";
         DownloadUpdatesCommand download_updates;
         download_updates.Execute(session);
@@ skipping 199 matching lines @@
                       entry.id_string().c_str(),
                       entry.parent_id_string().c_str(),
                       entry.version(),
                       entry.mtime(), ServerTimeToClientTime(entry.mtime()),
                       entry.ctime(), ServerTimeToClientTime(entry.ctime()),
                       entry.name().c_str(), entry.sync_timestamp(),
                       entry.deleted() ? "deleted, ":"");
 }
 
 }  // namespace browser_sync