Move definition of PasswordType enum to a separate header.

components/sync/core_impl/js_sync_encryption_handler_observer_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 "components/sync/core_impl/js_sync_encryption_handler_observer.h"
 
 #include "base/location.h"
 #include "base/run_loop.h"
 #include "base/values.h"
 #include "components/sync/base/cryptographer.h"
 #include "components/sync/base/fake_encryptor.h"
 #include "components/sync/base/model_type.h"
+#include "components/sync/base/passphrase_type.h"
 #include "components/sync/base/time.h"
 #include "components/sync/base/weak_handle.h"
 #include "components/sync/engine/sync_string_conversions.h"
 #include "components/sync/js/js_event_details.h"
 #include "components/sync/js/js_test_util.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace syncer {
 namespace {
 
@@ skipping 133 matching lines @@
               HandleJsEvent("onPassphraseTypeChanged",
                             HasDetailsAsDictionary(passphrase_type_details)));
 
   js_sync_encryption_handler_observer_.OnPassphraseTypeChanged(
       PassphraseType::IMPLICIT_PASSPHRASE, ProtoTimeToTime(10));
   PumpLoop();
 }
 
 }  // namespace
 }  // namespace syncer