Prefetching: Introduce store commands abstractions to be used by tasks.

components/offline_pages/core/prefetch/prefetch_in_memory_store.cc

Index: components/offline_pages/core/prefetch/prefetch_in_memory_store.cc
diff --git a/components/offline_pages/core/prefetch/prefetch_in_memory_store.cc b/components/offline_pages/core/prefetch/prefetch_in_memory_store.cc
deleted file mode 100644
index efab3dba8b63090425e23927cfc8779d24a4f248..0000000000000000000000000000000000000000
--- a/components/offline_pages/core/prefetch/prefetch_in_memory_store.cc
+++ /dev/null
@@ -1,13 +0,0 @@
-// Copyright 2017 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 "components/offline_pages/core/prefetch/prefetch_in_memory_store.h"
-
-namespace offline_pages {
-
-PrefetchInMemoryStore::PrefetchInMemoryStore() = default;
-
-PrefetchInMemoryStore::~PrefetchInMemoryStore() = default;
-
-}  // namespace offline_pages