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

sync/syncable/syncable_id_unittest.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/syncable/syncable_id.h"
 
 #include <vector>
 
 #include "base/memory/scoped_ptr.h"
 #include "base/test/values_test_util.h"
 #include "base/values.h"
 #include "sync/test/engine/test_id_factory.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
-using std::vector;
-
 namespace syncer {
 namespace syncable {
 
-using syncer::TestIdFactory;
+using std::vector;
 
 class SyncableIdTest : public testing::Test { };
 
 TEST(SyncableIdTest, TestIDCreation) {
   vector<Id> v;
   v.push_back(TestIdFactory::FromNumber(5));
   v.push_back(TestIdFactory::FromNumber(1));
   v.push_back(TestIdFactory::FromNumber(-5));
   v.push_back(TestIdFactory::MakeLocal("A"));
   v.push_back(TestIdFactory::MakeLocal("B"));
@@ skipping 58 matching lines @@
   base::ExpectStringValue("r", Id::CreateFromServerId("0").ToValue());
   base::ExpectStringValue("svalue", Id::CreateFromServerId("value").ToValue());
 
   base::ExpectStringValue("r", Id::CreateFromClientString("0").ToValue());
   base::ExpectStringValue("cvalue",
                           Id::CreateFromClientString("value").ToValue());
 }
 
 }  // namespace syncable
 }  // namespace syncer