1 files changed, 46 insertions, 0 deletions
diff --git a/chromium/third_party/blink/renderer/modules/native_file_system/native_file_system_writable_file_stream.h b/chromium/third_party/blink/renderer/modules/native_file_system/native_file_system_writable_file_stream.h
new file mode 100644
index 00000000000..3eb79e89f89
--- /dev/null
+++ b/chromium/third_party/blink/renderer/modules/native_file_system/native_file_system_writable_file_stream.h
@@ -0,0 +1,46 @@
+// Copyright 2019 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 THIRD_PARTY_BLINK_RENDERER_MODULES_NATIVE_FILE_SYSTEM_NATIVE_FILE_SYSTEM_WRITABLE_FILE_STREAM_H_
+#define THIRD_PARTY_BLINK_RENDERER_MODULES_NATIVE_FILE_SYSTEM_NATIVE_FILE_SYSTEM_WRITABLE_FILE_STREAM_H_
+
+#include "mojo/public/cpp/bindings/remote.h"
+#include "third_party/blink/public/mojom/native_file_system/native_file_system_error.mojom-blink.h"
+#include "third_party/blink/public/mojom/native_file_system/native_file_system_file_writer.mojom-blink.h"
+#include "third_party/blink/renderer/bindings/modules/v8/array_buffer_or_array_buffer_view_or_blob_or_usv_string_or_write_params.h"
+#include "third_party/blink/renderer/core/streams/writable_stream.h"
+#include "third_party/blink/renderer/core/streams/writable_stream_default_writer.h"
+#include "third_party/blink/renderer/platform/bindings/script_wrappable.h"
+
+namespace blink {
+
+class ScriptPromise;
+class ScriptState;
+class NativeFileSystemUnderlyingSink;
+
+class NativeFileSystemWritableFileStream final : public WritableStream {
+  DEFINE_WRAPPERTYPEINFO();
+
+ public:
+  static NativeFileSystemWritableFileStream* Create(
+      ScriptState*,
+      mojo::PendingRemote<mojom::blink::NativeFileSystemFileWriter>);
+
+  void Trace(Visitor* visitor) override;
+
+  // IDL defined functions specific to NativeFileSystemWritableFileStream.
+  ScriptPromise write(
+      ScriptState*,
+      const ArrayBufferOrArrayBufferViewOrBlobOrUSVStringOrWriteParams& data,
+      ExceptionState&);
+  ScriptPromise truncate(ScriptState*, uint64_t size, ExceptionState&);
+  ScriptPromise close(ScriptState*, ExceptionState&);
+  ScriptPromise seek(ScriptState*, uint64_t offset, ExceptionState&);
+
+ private:
+  Member<NativeFileSystemUnderlyingSink> underlying_sink_;
+};
+}  // namespace blink
+
+#endif  // THIRD_PARTY_BLINK_RENDERER_MODULES_NATIVE_FILE_SYSTEM_NATIVE_FILE_SYSTEM_WRITABLE_FILE_STREAM_H_