[Sync] Refactor passphrase state handling

sync/internal_api/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 "sync/internal_api/js_sync_encryption_handler_observer.h"
 
 #include "base/basictypes.h"
 #include "base/location.h"
 #include "base/message_loop.h"
 #include "base/values.h"
@@ skipping 136 matching lines @@
                             HasDetailsAsDictionary(expected_details)));
 
   FakeEncryptor encryptor;
   Cryptographer cryptographer(&encryptor);
 
   js_sync_encryption_handler_observer_.OnCryptographerStateChanged(
       &cryptographer);
   PumpLoop();
 }
 
+TEST_F(JsSyncEncryptionHandlerObserverTest, OnPassphraseStateChanged) {
+  InSequence dummy;
+
+  DictionaryValue passphrase_state_details;
+  passphrase_state_details.SetString("passphraseState", "IMPLICIT_PASSPHRASE");
+  EXPECT_CALL(mock_js_event_handler_,
+              HandleJsEvent("onPassphraseStateChanged",
+                            HasDetailsAsDictionary(passphrase_state_details)));
+
+  js_sync_encryption_handler_observer_.OnPassphraseStateChanged(
+      IMPLICIT_PASSPHRASE);
+  PumpLoop();
+}
+
 }  // namespace
 }  // namespace syncer