diff -r 000000000000 -r 6474c204b198 media/webrtc/signaling/src/common/time_profiling/timecard.h
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/media/webrtc/signaling/src/common/time_profiling/timecard.h	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,81 @@
+/* -*- Mode: C; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* 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 timecard_h__
+#define timecard_h__
+
+#include <stdlib.h>
+#include "prtime.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#define STAMP_TIMECARD(card,event)                                       \
+  do {                                                                   \
+    if (card) {                                                          \
+      stamp_timecard((card), (event), __FILE__, __LINE__, __FUNCTION__); \
+    }                                                                    \
+  } while (0)
+
+#define TIMECARD_INITIAL_TABLE_SIZE 16
+
+/*
+ * The "const char *" members of this structure point to static strings.
+ * We do not own them, and should not attempt to deallocate them.
+ */
+
+typedef struct {
+  PRTime timestamp;
+  const char *event;
+  const char *file;
+  unsigned int line;
+  const char *function;
+} TimecardEntry;
+
+typedef struct Timecard {
+  size_t curr_entry;
+  size_t entries_allocated;
+  TimecardEntry *entries;
+  PRTime start_time;
+} Timecard;
+
+/**
+ * Creates a new Timecard structure for tracking events.
+ */
+Timecard *
+create_timecard();
+
+/**
+ * Frees the memory associated with a timecard. After returning, the
+ * timecard pointed to by tc is no longer valid.
+ */
+void
+destroy_timecard(Timecard *tc);
+
+/**
+ * Records a new event in the indicated timecard. This should not be
+ * called directly; code should instead use the STAMP_TIMECARD macro,
+ * above.
+ */
+void
+stamp_timecard(Timecard *tc,
+               const char *event,
+               const char *file,
+               unsigned int line,
+               const char *function);
+
+/**
+ * Formats and outputs the contents of a timecard onto stdout.
+ */
+void
+print_timecard(Timecard *tc);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif