Index: components/offline_pages/core/prefetch/prefetch_service.h |
diff --git a/components/offline_pages/core/prefetch/prefetch_service.h b/components/offline_pages/core/prefetch/prefetch_service.h |
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+// 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. |
+ |
+#ifndef COMPONENTS_OFFLINE_PAGES_CORE_PREFETCH_PREFETCH_SERVICE_H_ |
+#define COMPONENTS_OFFLINE_PAGES_CORE_PREFETCH_PREFETCH_SERVICE_H_ |
+ |
+#include "components/keyed_service/core/keyed_service.h" |
+#include "components/offline_pages/core/offline_page_item.h" |
+ |
+class GURL; |
+ |
+namespace offline_pages { |
+ |
+// Main class for the Offline Pages Prefetching feature, which will ask a server |
+// to package content from interesting URLs and send it to Chrome for |
+// consumption while offline. |
+class PrefetchService : public KeyedService { |
+ public: |
+ struct PrefetchURL { |
+ // Used to differentiate URLs from different sources. |name_space| should |
+ // be unique per source. |id| can be anything useful to identify the page, |
+ // but will not be used for deduplication. |
+ ClientId client_id; |
+ |
+ // This URL will be prefetched by the service. |
+ GURL url; |
+ }; |
+ |
+ ~PrefetchService() override = default; |
+ |
+ // Called when a consumer has candidate URLs for the system to prefetch. |
+ // Duplicates are accepted by the PrefetchService but ignored. |
+ virtual void AddCandidatePrefetchURLs( |
+ const std::vector<PrefetchURL>& prefetch_urls) = 0; |
+ |
+ // Called when all existing suggestions are no longer considered valid for a |
+ // given namespace. The prefetch service should remove any URLs that |
+ // have not yet started downloading within that namespace. |
+ virtual void RemoveAllUnprocessedPrefetchURLs( |
+ const std::string& name_space) = 0; |
+ |
+ // Called to invalidate a single PrefetchURL entry identified by |client_id|. |
+ // If multiple have the same |client_id|, they will all be removed. |
+ virtual void RemovePrefetchURLsByClientId(const ClientId& client_id) = 0; |
+}; |
+ |
+} // namespace offline_pages |
+ |
+#endif // COMPONENTS_OFFLINE_PAGES_CORE_PREFETCH_PREFETCH_SERVICE_IMPL_H_ |