import FIREFOX_52_6_0esr_RELEASE from mozilla-esr52 hg repo

toolkit/components/startup/StartupTimeline.cpp

@@ -0,0 +1,36 @@
+/* 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/. */
+
+#include "StartupTimeline.h"
+#include "mozilla/Telemetry.h"
+#include "mozilla/TimeStamp.h"
+#include "nsXULAppAPI.h"
+
+namespace mozilla {
+
+TimeStamp StartupTimeline::sStartupTimeline[StartupTimeline::MAX_EVENT_ID];
+const char *StartupTimeline::sStartupTimelineDesc[StartupTimeline::MAX_EVENT_ID] = {
+#define mozilla_StartupTimeline_Event(ev, desc) desc,
+#include "StartupTimeline.h"
+#undef mozilla_StartupTimeline_Event
+};
+
+} /* namespace mozilla */
+
+using mozilla::StartupTimeline;
+using mozilla::TimeStamp;
+
+/**
+ * The XRE_StartupTimeline_Record function is to be used by embedding
+ * applications that can't use mozilla::StartupTimeline::Record() directly.
+ *
+ * @param aEvent The event to be recorded, must correspond to an element of the
+ *               mozilla::StartupTimeline::Event enumartion
+ * @param aWhen  The time at which the event happened
+ */
+void
+XRE_StartupTimelineRecord(int aEvent, TimeStamp aWhen)
+{
+  StartupTimeline::Record((StartupTimeline::Event)aEvent, aWhen);
+}