[Sync] Componentize synced_tab_delegate

components/sync_sessions/fake_sync_sessions_client.h

+// Copyright 2015 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_SESSIONS_FAKE_SYNC_SESSIONS_CLIENT_H_
+#define COMPONENTS_SYNC_SESSIONS_FAKE_SYNC_SESSIONS_CLIENT_H_
+
+#include "components/sync_sessions/sync_sessions_client.h"
+
+namespace sync_sessions {
+
+// Fake implementation of a SyncSessionsClient for testing.
+class FakeSyncSessionsClient : public SyncSessionsClient {
+ public:
+  FakeSyncSessionsClient();
+  ~FakeSyncSessionsClient() override;
+
+  // SyncSessionsClient:
+  bool ShouldSyncURL(const GURL& url) const override;
+};
+
+}  // namespace sync_sessions
+
+#endif  // COMPONENTS_SYNC_SESSIONS_FAKE_SYNC_SESSIONS_CLIENT_H_