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+// Copyright 2013 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 CONTENT_BROWSER_BROWSER_SHUTDOWN_PROFILE_DUMPER_H_
+#define CONTENT_BROWSER_BROWSER_SHUTDOWN_PROFILE_DUMPER_H_
+
+#include <string>
+
+#include "base/basictypes.h"
+#include "base/memory/ref_counted.h"
+#include "base/memory/ref_counted_memory.h"
+#include "content/common/content_export.h"
+
+namespace base {
+class FilePath;
+}
+
+namespace content {
+
+// This class is intended to dump the tracing results of the shutdown process
+// to a file before the browser process exits.
+// It will save the file either into the command line passed
+// "--trace-shutdown-file=<name>" parameter - or - to "chrometrace.log" in the
+// current directory.
+// Use the class with a scoped_ptr to get files written in the destructor.
+// Note that we cannot use the asynchronous file writer since the
+// |SequencedWorkerPool| will get killed in the shutdown process.
+class BrowserShutdownProfileDumper {
+ public:
+ BrowserShutdownProfileDumper();
+
+ ~BrowserShutdownProfileDumper();
+
+ private:
+ // Writes all traces which happened to disk.
+ void WriteTracesToDisc(const base::FilePath& file_name);
+
+ // Returns the file name where we should save the trace dump to.
+ base::FilePath GetFileName();
+
+ // The callback for the |TraceLog::Flush| function. It saves all traces to
+ // disc.
+ void WriteTraceDataCollected(
+ const scoped_refptr<base::RefCountedString>& events_str);
+
+ // Returns true if the dump file is valid.
+ bool IsFileValid();
+
+ // Writes a string to the dump file.
+ void WriteString(const std::string& string);
+
+ // Write a buffer to the dump file.
+ void WriteChars(const char* chars, size_t size);
+
+ // Closes the dump file.
+ void CloseFile();
+
+ // The number of blocks we have already written.
+ int blocks_;
+ // For dumping the content to disc.
+ FILE* dump_file_;
+
+ DISALLOW_COPY_AND_ASSIGN(BrowserShutdownProfileDumper);
+};
+
+} // namespace content
+
+#endif // CONTENT_BROWSER_BROWSER_SHUTDOWN_PROFILE_DUMPER_H_