1 files changed, 42 insertions, 0 deletions
diff --git a/api/test/track_id_stream_info_map.h b/api/test/track_id_stream_info_map.h
new file mode 100644
index 0000000000..bb73cfd997
--- /dev/null
+++ b/api/test/track_id_stream_info_map.h
@@ -0,0 +1,42 @@
+/*
+ *  Copyright (c) 2019 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 API_TEST_TRACK_ID_STREAM_INFO_MAP_H_
+#define API_TEST_TRACK_ID_STREAM_INFO_MAP_H_
+
+#include "absl/strings/string_view.h"
+
+namespace webrtc {
+namespace webrtc_pc_e2e {
+
+// Instances of |TrackIdStreamInfoMap| provide bookkeeping capabilities that
+// are useful to associate stats reports track_ids to the remote stream info.
+class TrackIdStreamInfoMap {
+ public:
+  virtual ~TrackIdStreamInfoMap() = default;
+
+  // These methods must be called on the same thread where
+  // StatsObserverInterface::OnStatsReports is invoked.
+
+  // Returns a reference to a stream label owned by the TrackIdStreamInfoMap.
+  // Precondition: |track_id| must be already mapped to stream label.
+  virtual absl::string_view GetStreamLabelFromTrackId(
+      absl::string_view track_id) const = 0;
+
+  // Returns a reference to a sync group name owned by the TrackIdStreamInfoMap.
+  // Precondition: |track_id| must be already mapped to sync group.
+  virtual absl::string_view GetSyncGroupLabelFromTrackId(
+      absl::string_view track_id) const = 0;
+};
+
+}  // namespace webrtc_pc_e2e
+}  // namespace webrtc
+
+#endif  // API_TEST_TRACK_ID_STREAM_INFO_MAP_H_