[Sync] Move ConfigureDataTypes logic into DataTypeManagerImpl.

components/sync/engine/sync_engine_host_stub.h

Index: components/sync/engine/sync_engine_host_stub.h
diff --git a/components/sync/engine/sync_engine_host_stub.h b/components/sync/engine/sync_engine_host_stub.h
new file mode 100644
index 0000000000000000000000000000000000000000..feef51707a10ebd43f5d96510af5a4004510baf5
--- /dev/null
+++ b/components/sync/engine/sync_engine_host_stub.h
@@ -0,0 +1,53 @@
+// Copyright 2016 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.
+
+#ifndef COMPONENTS_SYNC_ENGINE_SYNC_ENGINE_HOST_STUB_H_
+#define COMPONENTS_SYNC_ENGINE_SYNC_ENGINE_HOST_STUB_H_
+
+#include <string>
+
+#include "components/sync/engine/sync_engine_host.h"
+
+namespace syncer {
+
+class SyncEngineHostStub : public SyncEngineHost {
+ public:
+  SyncEngineHostStub();
+  ~SyncEngineHostStub() override;
+
+  // SyncEngineHost implementation.
+  void OnEngineInitialized(
+      ModelTypeSet initial_types,
+      const WeakHandle<JsBackend>& js_backend,
+      const WeakHandle<DataTypeDebugInfoListener>& debug_info_listener,
+      const std::string& cache_guid,
+      bool success) override;
+  void OnSyncCycleCompleted() override;
+  void OnProtocolEvent(const ProtocolEvent& event) override;
+  void OnDirectoryTypeCommitCounterUpdated(
+      ModelType type,
+      const CommitCounters& counters) override;
+  void OnDirectoryTypeUpdateCounterUpdated(
+      ModelType type,
+      const UpdateCounters& counters) override;
+  void OnDatatypeStatusCounterUpdated(ModelType type,
+                                      const StatusCounters& counters) override;
+  void OnConnectionStatusChange(ConnectionStatus status) override;
+  void OnPassphraseRequired(
+      PassphraseRequiredReason reason,
+      const sync_pb::EncryptedData& pending_keys) override;
+  void OnPassphraseAccepted() override;
+  void OnEncryptedTypesChanged(ModelTypeSet encrypted_types,
+                               bool encrypt_everything) override;
+  void OnEncryptionComplete() override;
+  void OnMigrationNeededForTypes(ModelTypeSet types) override;
+  void OnExperimentsChanged(const Experiments& experiments) override;
+  void OnActionableError(const SyncProtocolError& error) override;
+  void OnLocalSetPassphraseEncryption(
+      const SyncEncryptionHandler::NigoriState& nigori_state) override;
+};
+
+}  // namespace syncer
+
+#endif  // COMPONENTS_SYNC_ENGINE_SYNC_ENGINE_HOST_STUB_H_