Release based on cl/313536507.

Signed-off-by: Alexey Polyudov <apolyudov@google.com>
Change-Id: I83ec7dee1a7ef6f4bdfd47482c94d03910525b7e

cpp/platform_v2/base/output_stream.h

@@ -0,0 +1,39 @@
+// Copyright 2020 Google LLC
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#ifndef PLATFORM_V2_BASE_OUTPUT_STREAM_H_
+#define PLATFORM_V2_BASE_OUTPUT_STREAM_H_
+
+#include "platform_v2/base/byte_array.h"
+#include "platform_v2/base/exception.h"
+
+namespace location {
+namespace nearby {
+
+// An OutputStream represents an output stream of bytes.
+//
+// https://docs.oracle.com/javase/8/docs/api/java/io/OutputStream.html
+class OutputStream {
+ public:
+  virtual ~OutputStream() = default;
+
+  virtual Exception Write(const ByteArray& data) = 0;  // throws Exception::kIo
+  virtual Exception Flush() = 0;                       // throws Exception::kIo
+  virtual Exception Close() = 0;                       // throws Exception::kIo
+};
+
+}  // namespace nearby
+}  // namespace location
+
+#endif  // PLATFORM_V2_BASE_OUTPUT_STREAM_H_