[Offline Prefetech] Send GetOperationReqest to the server

components/offline_pages/core/prefetch/prefetch_proto_utils.h

+// 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_PROTO_UTILS_H_
+#define COMPONENTS_OFFLINE_PAGES_CORE_PREFETCH_PREFETCH_PROTO_UTILS_H_
+
+#include <vector>
+#include "components/offline_pages/core/prefetch/prefetch_types.h"
+
+namespace offline_pages {
+
+// The fully qualified type name for PageBundle defined in proto.
+extern const char kPageBundleTypeURL[];
+
+// Used to parse the Operation serialized in binary proto |data|.
+bool ParseOperationResponse(const std::string& data,
+                            std::vector<RenderPageInfo>* pages);
+
+}  // namespace offline_pages
+
+#endif  // COMPONENTS_OFFLINE_PAGES_CORE_PREFETCH_PREFETCH_PROTO_UTILS_H_