sync: use progress markers instead of timestamps during GetUpdates

chrome/browser/sync/engine/verify_updates_command.cc

 // Copyright (c) 2010 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/engine/verify_updates_command.h"
 
 #include "chrome/browser/sync/engine/syncer.h"
 #include "chrome/browser/sync/engine/syncer_proto_util.h"
 #include "chrome/browser/sync/engine/syncer_types.h"
@@ skipping 34 matching lines @@
     const SyncEntity& update =
         *reinterpret_cast<const SyncEntity *>(&(updates.entries(i)));
     ModelSafeGroup g = GetGroupForModelType(update.GetModelType(),
                                             session->routing_info());
     if (g != status->group_restriction())
       continue;
 
     VerifyUpdateResult result = VerifyUpdate(&trans, update,
                                              session->routing_info());
     status->mutable_update_progress()->AddVerifyResult(result.value, update);
+    status->increment_num_updates_downloaded_by(1);
+    if (update.deleted())
+      status->increment_num_tombstone_updates_downloaded_by(1);
   }
 }
 
 namespace {
 // In the event that IDs match, but tags differ AttemptReuniteClient tag
 // will have refused to unify the update.
 // We should not attempt to apply it at all since it violates consistency
 // rules.
 VerifyResult VerifyTagConsistency(const SyncEntity& entry,
                                   const syncable::MutableEntry& same_id) {
@@ skipping 51 matching lines @@
         deleted, is_directory, model_type);
   }
 
   if (VERIFY_UNDECIDED == result.value)
     result.value = VERIFY_SUCCESS;  // No news is good news.
 
   return result;  // This might be VERIFY_SUCCESS as well
 }
 
 }  // namespace browser_sync