[Sync] Refactor passphrase state handling

sync/internal_api/sync_encryption_handler_impl_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/sync_encryption_handler_impl.h"
 
 #include <string>
 
 #include "base/memory/scoped_ptr.h"
 #include "base/message_loop.h"
@@ skipping 27 matching lines @@
  public:
   MOCK_METHOD2(OnPassphraseRequired,
                void(PassphraseRequiredReason,
                     const sync_pb::EncryptedData&));  // NOLINT
   MOCK_METHOD0(OnPassphraseAccepted, void());  // NOLINT
   MOCK_METHOD1(OnBootstrapTokenUpdated, void(const std::string&));  // NOLINT
   MOCK_METHOD2(OnEncryptedTypesChanged,
                void(ModelTypeSet, bool));  // NOLINT
   MOCK_METHOD0(OnEncryptionComplete, void());  // NOLINT
   MOCK_METHOD1(OnCryptographerStateChanged, void(Cryptographer*));  // NOLINT
+  MOCK_METHOD1(OnPassphraseStateChanged, void(PassphraseState));  // NOLINT
 };
 
 }  // namespace
 
 class SyncEncryptionHandlerImplTest : public ::testing::Test {
  public:
   SyncEncryptionHandlerImplTest() {}
   virtual ~SyncEncryptionHandlerImplTest() {}
 
   virtual void SetUp() {
@@ skipping 346 matching lines @@
         other_encrypted_specifics.encrypted()));
     EXPECT_TRUE(GetCryptographer()->CanDecrypt(nigori.encrypted()));
     EXPECT_TRUE(nigori.encrypt_everything());
     EXPECT_TRUE(
         GetCryptographer()->CanDecryptUsingDefaultKey(nigori.encrypted()));
   }
   EXPECT_TRUE(encryption_handler()->EncryptEverythingEnabled());
 }
 
 }  // namespace syncer