[Offline Prefetech] Send GetOperationReqest to the server

components/offline_pages/core/prefetch/get_operation_request.h

Index: components/offline_pages/core/prefetch/get_operation_request.h
diff --git a/components/offline_pages/core/prefetch/get_operation_request.h b/components/offline_pages/core/prefetch/get_operation_request.h
new file mode 100644
index 0000000000000000000000000000000000000000..6793f2eb229753d800549c141c0ef7a37f45ce6d
--- /dev/null
+++ b/components/offline_pages/core/prefetch/get_operation_request.h
@@ -0,0 +1,45 @@
+// 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_GET_OPERATION_REQUEST_H_
+#define COMPONENTS_OFFLINE_PAGES_CORE_PREFETCH_GET_OPERATION_REQUEST_H_
+
+#include <vector>
+
+#include "base/callback.h"
+#include "base/macros.h"
+#include "components/offline_pages/core/prefetch/prefetch_types.h"
+
+namespace net {
+class URLRequestContextGetter;
+}
+
+namespace offline_pages {
+
+class PrefetchRequestFetcher;
+
+// Sends this request to find out the current state of an operation that is
+// triggered by GeneratePageBundleRequest but not finished at that time.
+class GetOperationRequest {
+ public:
+  // |name| identifies the operation triggered by the GeneratePageBundleRequest.
+  // It is retrieved from the operation data returned in the
+  // GeneratePageBundleRequest response.
+  GetOperationRequest(const std::string& name,
+                      net::URLRequestContextGetter* request_context_getter,
+                      const PrefetchRequestFinishedCallback& callback);
+  ~GetOperationRequest();
+
+ private:
+  void OnCompleted(PrefetchRequestStatus status, const std::string& data);
+
+  PrefetchRequestFinishedCallback callback_;
+  std::unique_ptr<PrefetchRequestFetcher> fetcher_;
+
+  DISALLOW_COPY_AND_ASSIGN(GetOperationRequest);
+};
+
+}  // namespace offline_pages
+
+#endif  // COMPONENTS_OFFLINE_PAGES_CORE_PREFETCH_GET_OPERATION_REQUEST_H_