[Sync] Remove unneeded 'using syncer::' lines and 'syncer::' scopings

sync/engine/update_applicator.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/update_applicator.h"
 
 #include <vector>
 
 #include "base/logging.h"
 #include "sync/engine/syncer_util.h"
@@ skipping 83 matching lines @@
 
   return true;
 }
 
 void UpdateApplicator::Advance() {
   --end_;
   *pointer_ = *end_;
 }
 
 bool UpdateApplicator::SkipUpdate(const syncable::Entry& entry) {
-  syncer::ModelType type = entry.GetServerModelType();
+  ModelType type = entry.GetServerModelType();
   ModelSafeGroup g = GetGroupForModelType(type, routing_info_);
   // The set of updates passed to the UpdateApplicator should already
   // be group-filtered.
   if (g != group_filter_) {
     NOTREACHED();
     return true;
   }
   if (g == GROUP_PASSIVE &&
       !routing_info_.count(type) &&
-      type != syncer::UNSPECIFIED &&
-      type != syncer::TOP_LEVEL_FOLDER) {
+      type != UNSPECIFIED &&
+      type != TOP_LEVEL_FOLDER) {
     DVLOG(1) << "Skipping update application, type not permitted.";
     return true;
   }
   return false;
 }
 
 bool UpdateApplicator::AllUpdatesApplied() const {
   return application_results_.no_conflicts() && begin_ == end_;
 }
 
@@ skipping 57 matching lines @@
   conflicting_ids_.clear();
   encryption_conflict_ids_.clear();
   hierarchy_conflict_ids_.clear();
 }
 
 bool UpdateApplicator::ResultTracker::no_conflicts() const {
   return conflicting_ids_.empty();
 }
 
 }  // namespace syncer