Precache tracking database

components/precache/core/url_list_provider.h

+// Copyright 2013 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_PRECACHE_CORE_URL_LIST_PROVIDER_H_
+#define COMPONENTS_PRECACHE_CORE_URL_LIST_PROVIDER_H_
+
+#include <list>
+
+#include "base/callback.h"
+#include "url/gurl.h"
+
+namespace precache {
+
+// Interface for classes that can provide a list of URLs.
+class URLListProvider {
+ public:
+  typedef base::Callback<void(const std::list<GURL>&)> GetURLsCallback;
+
+  // Runs |callback| with a list of URLs. |callback| may be run before the call
+  // to GetURLs returns.
+  virtual void GetURLs(const GetURLsCallback& callback) = 0;
+};
+
+}  // namespace precache
+
+#endif  // COMPONENTS_PRECACHE_CORE_URL_LIST_PROVIDER_H_