Implement profiler log writing at shutdown

chrome/browser/task_profiler/task_profiler_data_serializer.h

Index: chrome/browser/task_profiler/task_profiler_data_serializer.h
diff --git a/chrome/browser/task_profiler/task_profiler_data_serializer.h b/chrome/browser/task_profiler/task_profiler_data_serializer.h
new file mode 100644
index 0000000000000000000000000000000000000000..ed8685f933bbfe0417b4fdb188bcf5262ddc1ac7
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+++ b/chrome/browser/task_profiler/task_profiler_data_serializer.h
@@ -0,0 +1,22 @@
+// 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.
+
+#ifndef CHROME_BROWSER_TASK_PROFILER_TASK_PROFILER_DATA_SERIALIZER_H_
+#define CHROME_BROWSER_TASK_PROFILER_TASK_PROFILER_DATA_SERIALIZER_H_
+#pragma once
+
+class FilePath;
+
+namespace task_profiler {
+
+// This class collects task profiler data and serializes it to a file.  The file
+// format is compatible with the about:profiler UI.
+class TaskProfilerDataSerializer {
+ public:
+  bool WriteToFile(const FilePath &path);
+};
+
+}  // namespace task_profiler
+
+#endif  // CHROME_BROWSER_TASK_PROFILER_TASK_PROFILER_DATA_SERIALIZER_H_