[Sync] Move //components/sync to the syncer namespace.

components/sync/core/model_type_store_impl_unittest.cc

 // Copyright 2015 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 "components/sync/core/model_type_store_impl.h"
 
 #include <utility>
 
 #include "base/bind.h"
 #include "base/message_loop/message_loop.h"
 #include "base/run_loop.h"
 #include "testing/gmock/include/gmock/gmock.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
-namespace syncer_v2 {
+namespace syncer {
 
 class ModelTypeStoreImplTest : public testing::Test {
  public:
   void TearDown() override {
     if (store_) {
       store_.reset();
       PumpLoop();
     }
   }
 
@@ skipping 177 matching lines @@
 
   store()->ReadData(id_list, base::Bind(&CaptureResutRecordsAndIdList, &result,
                                         &records, &missing_id_list));
   PumpLoop();
   ASSERT_EQ(ModelTypeStore::Result::SUCCESS, result);
   ASSERT_THAT(*records,
               testing::UnorderedElementsAre(RecordMatches("id1", "data1")));
   ASSERT_THAT(*missing_id_list, testing::UnorderedElementsAre("id3"));
 }
 
-}  // namespace syncer_v2
+}  // namespace syncer