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diff --git a/src/core/ext/load_reporting/load_reporting.h b/src/core/ext/load_reporting/load_reporting.h
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+/*
+ *
+ * Copyright 2016, Google Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ *     * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#ifndef GRPC_CORE_EXT_LOAD_REPORTING_LOAD_REPORTING_H
+#define GRPC_CORE_EXT_LOAD_REPORTING_LOAD_REPORTING_H
+
+#include "src/core/lib/iomgr/closure.h"
+#include "src/core/lib/surface/call.h"
+
+typedef struct grpc_load_reporting_data grpc_load_reporting_data;
+
+/** Custom function to be called by the load reporting filter.
+ *
+ * The \a data pointer is the same as the one passed to \a
+ * grpc_load_reporting_init. \a stats are the final per-call statistics gathered
+ * by the gRPC runtime. */
+typedef void (*grpc_load_reporting_fn)(void *data,
+                                       const grpc_call_stats *stats);
+
+/** Register \a fn as the function to be invoked by the load reporting filter,
+ * passing \a data as its namesake argument. To be called only from a plugin
+ * init function. */
+grpc_load_reporting_data *grpc_load_reporting_create(grpc_load_reporting_fn fn,
+                                                     void *data);
+
+// XXX
+void grpc_load_reporting_destroy(grpc_load_reporting_data *lrd);
+
+/** Invoke the function registered by \a grpc_load_reporting_init, passing it \a
+ * stats as one of the arguments (see \a load_reporting_fn). */
+void grpc_load_reporting_call(grpc_load_reporting_data *lrd,
+                              const grpc_call_stats *stats);
+
+#endif /* GRPC_CORE_EXT_LOAD_REPORTING_LOAD_REPORTING_H */