1 files changed, 38 insertions, 0 deletions
diff --git a/third_party/libwebrtc/test/field_trial.h b/third_party/libwebrtc/test/field_trial.h
new file mode 100644
index 0000000000..516faa0513
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+++ b/third_party/libwebrtc/test/field_trial.h
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+/*
+ *  Copyright (c) 2014 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 TEST_FIELD_TRIAL_H_
+#define TEST_FIELD_TRIAL_H_
+
+#include <string>
+
+#include "absl/strings/string_view.h"
+
+namespace webrtc {
+namespace test {
+
+// This class is used to override field-trial configs within specific tests.
+// After this class goes out of scope previous field trials will be restored.
+class ScopedFieldTrials {
+ public:
+  explicit ScopedFieldTrials(absl::string_view config);
+  ScopedFieldTrials(const ScopedFieldTrials&) = delete;
+  ScopedFieldTrials& operator=(const ScopedFieldTrials&) = delete;
+  ~ScopedFieldTrials();
+
+ private:
+  std::string current_field_trials_;
+  const char* previous_field_trials_;
+};
+
+}  // namespace test
+}  // namespace webrtc
+
+#endif  // TEST_FIELD_TRIAL_H_