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+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef XRE_EVENTTRACER_H_
+#define XRE_EVENTTRACER_H_
+
+namespace mozilla {
+
+// Create a thread that will fire events back at the
+// main thread to measure responsiveness. Return true
+// if the thread was created successfully.
+// aLog If the tracing results should be printed to
+// the console.
+bool InitEventTracing(bool aLog);
+
+// Signal the background thread to stop, and join it.
+// Must be called from the same thread that called InitEventTracing.
+void ShutdownEventTracing();
+
+} // namespace mozilla
+
+#endif /* XRE_EVENTTRACER_H_ */