[Sync] Rename csync namespace to syncer

sync/test/engine/test_directory_setter_upper.h

 // 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.
 //
 // A handy class that takes care of setting up and destroying a
 // syncable::Directory instance for unit tests that require one.
 //
 // The expected usage is to make this a component of your test fixture:
 //
 //   class AwesomenessTest : public testing::Test {
@@ skipping 27 matching lines @@
 #include "base/scoped_temp_dir.h"
 #include "sync/test/fake_encryptor.h"
 #include "sync/test/null_directory_change_delegate.h"
 #include "sync/util/test_unrecoverable_error_handler.h"
 #include "testing/gmock/include/gmock/gmock.h"
 
 namespace syncable {
   class Directory;
 }
 
-namespace csync {
+namespace syncer {
 
 class TestDirectorySetterUpper {
  public:
   TestDirectorySetterUpper();
   virtual ~TestDirectorySetterUpper();
 
   // Create a Directory instance open it.
   virtual void SetUp();
 
   // Undo everything done by SetUp(): close the directory and delete the
@@ skipping 10 matching lines @@
   void RunInvariantCheck();
 
   ScopedTempDir temp_dir_;
   FakeEncryptor encryptor_;
   scoped_ptr<syncable::Directory> directory_;
   std::string name_;
 
   DISALLOW_COPY_AND_ASSIGN(TestDirectorySetterUpper);
 };
 
-}  // namespace csync
+}  // namespace syncer
 
 #endif  // SYNC_TEST_ENGINE_TEST_DIRECTORY_SETTER_UPPER_H_