Move AddTraceEvent out-of-line

base/trace_event/trace_event.cc

+// Copyright (c) 2016 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "base/trace_event/trace_event.h"
+
+namespace trace_event_internal {
+
+base::trace_event::TraceEventHandle AddTraceEvent(
+    char phase,
+    const unsigned char* category_group_enabled,
+    const char* name,
+    const char* scope,
+    unsigned long long id,
+    unsigned int flags,
+    unsigned long long bind_id) {
+  const int thread_id = static_cast<int>(base::PlatformThread::CurrentId());
+  const base::TimeTicks now = base::TimeTicks::Now();
+  return AddTraceEventWithThreadIdAndTimestamp(phase, category_group_enabled,
+                                               name, scope, id, thread_id, now,
+                                               flags, bind_id);
+}
+
+}  // namespace trace_event_internal