New cpp folder structure

Signed-off-by: Alexander Borsuk <me@alex.bio>

libs/drape_frontend/drape_notifier.hpp

@@ -0,0 +1,35 @@
+#pragma once
+
+#include "drape_frontend/threads_commutator.hpp"
+
+#include "drape/pointers.hpp"
+
+#include "base/thread_pool_delayed.hpp"
+
+#include <atomic>
+#include <cstdint>
+#include <functional>
+
+namespace df
+{
+class DrapeNotifier
+{
+public:
+  static uint64_t constexpr kInvalidId = 0;
+  using Functor = std::function<void(uint64_t notifyId)>;
+
+  explicit DrapeNotifier(ref_ptr<ThreadsCommutator> commutator);
+
+  uint64_t Notify(ThreadsCommutator::ThreadName threadName,
+                  base::DelayedThreadPool::Duration const & duration,
+                  bool repeating, Functor && functor);
+
+private:
+  void NotifyImpl(ThreadsCommutator::ThreadName threadName,
+                  base::DelayedThreadPool::Duration const & duration, bool repeating,
+                  uint64_t notifyId, Functor && functor);
+
+  ref_ptr<ThreadsCommutator> m_commutator;
+  std::atomic<uint64_t> m_counter;
+};
+}  // namespace df