sync: Move migration signal out of snapshot

sync/internal_api/sync_manager_impl_unittest.cc

 // Copyright 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.
 
 // Unit tests for the SyncApi. Note that a lot of the underlying
 // functionality is provided by the Syncable layer, which has its own
 // unit tests. We'll test SyncApi specific things in this harness.
 
 #include <cstddef>
 #include <map>
@@ skipping 631 matching lines @@
   MOCK_METHOD4(OnInitializationComplete,
                void(const WeakHandle<JsBackend>&,
                     const WeakHandle<DataTypeDebugInfoListener>&,
                     bool,
                     syncer::ModelTypeSet));  // NOLINT
   MOCK_METHOD1(OnConnectionStatusChange, void(ConnectionStatus));  // NOLINT
   MOCK_METHOD0(OnStopSyncingPermanently, void());  // NOLINT
   MOCK_METHOD1(OnUpdatedToken, void(const std::string&));  // NOLINT
   MOCK_METHOD1(OnActionableError,
                void(const SyncProtocolError&));  // NOLINT
+  MOCK_METHOD1(OnMigrationRequested,
+               void(syncer::ModelTypeSet));  // NOLINT
 };
 
 class SyncEncryptionHandlerObserverMock
     : public SyncEncryptionHandler::Observer {
  public:
   MOCK_METHOD2(OnPassphraseRequired,
                void(PassphraseRequiredReason,
                     const sync_pb::EncryptedData&));  // NOLINT
   MOCK_METHOD0(OnPassphraseAccepted, void());  // NOLINT
   MOCK_METHOD2(OnBootstrapTokenUpdated,
@@ skipping 2518 matching lines @@
 // SyncManagerInitInvalidStorageTest::GetFactory will return
 // DirectoryBackingStore that ensures that SyncManagerImpl::OpenDirectory fails.
 // SyncManagerImpl initialization is done in SyncManagerTest::SetUp. This test's
 // task is to ensure that SyncManagerImpl reported initialization failure in
 // OnInitializationComplete callback.
 TEST_F(SyncManagerInitInvalidStorageTest, FailToOpenDatabase) {
   EXPECT_FALSE(initialization_succeeded_);
 }
 
 }  // namespace