Implement profiler log writing at shutdown

chrome/browser/task_profiler/auto_tracking.cc

Index: chrome/browser/task_profiler/auto_tracking.cc
diff --git a/chrome/browser/task_profiler/auto_tracking.cc b/chrome/browser/task_profiler/auto_tracking.cc
new file mode 100644
index 0000000000000000000000000000000000000000..425077c5b4976ab78c0de44af59e4424e11e9b6f
--- /dev/null
+++ b/chrome/browser/task_profiler/auto_tracking.cc
@@ -0,0 +1,21 @@
+// Copyright (c) 2011 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 "chrome/browser/task_profiler/auto_tracking.h"
+#include "chrome/browser/task_profiler/task_profiler_data_serializer.h"
+
+namespace task_profiler {
+
+AutoTracking::~AutoTracking() {
+  if (!output_file_path_.empty()) {
+    TaskProfilerDataSerializer output;
+    output.WriteToFile(output_file_path_);
+  }
+}
+
+void AutoTracking::set_output_file_path(const FilePath &path) {
+  output_file_path_ = path;
+}
+
+}  // namespace task_profiler