1 files changed, 46 insertions, 0 deletions
diff --git a/chromium/components/speech/downstream_loader.h b/chromium/components/speech/downstream_loader.h
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index 00000000000..f6682a7f8be
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+++ b/chromium/components/speech/downstream_loader.h
@@ -0,0 +1,46 @@
+// Copyright 2020 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_SPEECH_DOWNSTREAM_LOADER_H_
+#define COMPONENTS_SPEECH_DOWNSTREAM_LOADER_H_
+
+#include <memory>
+
+#include "base/callback_forward.h"
+#include "base/strings/string_piece.h"
+#include "services/network/public/cpp/resource_request.h"
+#include "services/network/public/cpp/simple_url_loader.h"
+#include "services/network/public/cpp/simple_url_loader_stream_consumer.h"
+
+namespace speech {
+
+class DownstreamLoaderClient;
+
+// Streams response data from the server to the DownstreamLoaderClient.
+class DownstreamLoader : public network::SimpleURLLoaderStreamConsumer {
+ public:
+  DownstreamLoader(std::unique_ptr<network::ResourceRequest> resource_request,
+                   net::NetworkTrafficAnnotationTag upstream_traffic_annotation,
+                   network::mojom::URLLoaderFactory* url_loader_factory,
+                   DownstreamLoaderClient* downstream_loader_client);
+  DownstreamLoader(const DownstreamLoader&) = delete;
+  DownstreamLoader& operator=(const DownstreamLoader&) = delete;
+  ~DownstreamLoader() override;
+
+  // SimpleURLLoaderStreamConsumer implementation:
+  void OnDataReceived(base::StringPiece string_piece,
+                      base::OnceClosure resume) override;
+  void OnComplete(bool success) override;
+  void OnRetry(base::OnceClosure start_retry) override;
+
+ private:
+  // The DownstreamLoaderClient must outlive the DownstreamLoader.
+  DownstreamLoaderClient* const downstream_loader_client_;
+
+  std::unique_ptr<network::SimpleURLLoader> simple_url_loader_;
+};
+
+}  // namespace speech
+
+#endif  // COMPONENTS_SPEECH_DOWNSTREAM_LOADER_H_