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diff --git a/webrtc/modules/remote_bitrate_estimator/test/bwe_test_baselinefile.h b/webrtc/modules/remote_bitrate_estimator/test/bwe_test_baselinefile.h
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+/*
+ *  Copyright (c) 2013 The WebRTC project authors. All Rights Reserved.
+ *
+ *  Use of this source code is governed by a BSD-style license
+ *  that can be found in the LICENSE file in the root of the source
+ *  tree. An additional intellectual property rights grant can be found
+ *  in the file PATENTS.  All contributing project authors may
+ *  be found in the AUTHORS file in the root of the source tree.
+ */
+
+#ifndef WEBRTC_MODULES_REMOTE_BITRATE_ESTIMATOR_TEST_BWE_TEST_BASELINEFILE_H_
+#define WEBRTC_MODULES_REMOTE_BITRATE_ESTIMATOR_TEST_BWE_TEST_BASELINEFILE_H_
+
+#include <string>
+#include "webrtc/modules/interface/module_common_types.h"
+
+namespace webrtc {
+namespace testing {
+namespace bwe {
+
+class BaseLineFileInterface {
+ public:
+  virtual ~BaseLineFileInterface() {}
+
+  // Compare, or log, one estimate against the baseline file.
+  virtual void Estimate(int64_t time_ms, uint32_t estimate_bps) = 0;
+
+  // Verify whether there are any differences between the logged estimates and
+  // those read from the baseline file. If updating the baseline file, write out
+  // new file if there were differences. Return true if logged estimates are
+  // identical, or if output file was updated successfully.
+  virtual bool VerifyOrWrite() = 0;
+
+  // Create an instance for either verifying estimates against a baseline file
+  // with name |filename|, living in the resources/ directory or, if the flag
+  // |write_updated_file| is set, write logged estimates to a file with the same
+  // name, living in the out/ directory.
+  static BaseLineFileInterface* Create(const std::string& filename,
+                                       bool write_updated_file);
+};
+}  // namespace bwe
+}  // namespace testing
+}  // namespace webrtc
+
+#endif  // WEBRTC_MODULES_REMOTE_BITRATE_ESTIMATOR_TEST_BWE_TEST_BASELINEFILE_H_