Store unsaved trace data on exit.

content/browser/browser_main_loop.h

 // Copyright (c) 2012 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_MAIN_LOOP_H_
 #define CONTENT_BROWSER_BROWSER_MAIN_LOOP_H_
 
 #include "base/basictypes.h"
+#include "base/files/file_path.h"
 #include "base/memory/ref_counted.h"
 #include "base/memory/scoped_ptr.h"
+#include "base/timer/timer.h"
 #include "content/browser/browser_process_sub_thread.h"
 #include "content/public/browser/browser_main_runner.h"
 
 namespace base {
 class CommandLine;
 class FilePath;
 class HighResolutionTimerManager;
 class MessageLoop;
 class PowerMonitor;
 class SystemMonitor;
@@ skipping 76 matching lines @@
     return media_stream_manager_.get();
   }
   media::UserInputMonitor* user_input_monitor() const {
     return user_input_monitor_.get();
   }
   media::MidiManager* midi_manager() const { return midi_manager_.get(); }
   base::Thread* indexed_db_thread() const { return indexed_db_thread_.get(); }
 
   bool is_tracing_startup() const { return is_tracing_startup_; }
 
+  const base::FilePath& startup_trace_file() const {
+    return startup_trace_file_;
+  }
+
+  void StopStartupTracingTimer();
+
 #if defined(OS_MACOSX) && !defined(OS_IOS)
   DeviceMonitorMac* device_monitor_mac() const {
     return device_monitor_mac_.get();
   }
 #endif
 
  private:
   class MemoryObserver;
   // For ShutdownThreadsAndCleanUp.
   friend class BrowserShutdownImpl;
 
   void InitializeMainThread();
 
   // Called just before creating the threads
   int PreCreateThreads();
 
   // Create all secondary threads.
   int CreateThreads();
 
   // Called right after the browser threads have been started.
   int BrowserThreadsStarted();
 
   int PreMainMessageLoopRun();
 
   void MainMessageLoopRun();
 
+  base::FilePath GetStartupTraceFileName(
+      const base::CommandLine& command_line) const;
   void InitStartupTracing(const base::CommandLine& command_line);
-  void EndStartupTracing(const base::FilePath& trace_file);
+  void EndStartupTracing();
 
   // Members initialized on construction ---------------------------------------
   const MainFunctionParams& parameters_;
   const base::CommandLine& parsed_command_line_;
   int result_code_;
   // True if the non-UI threads were created.
   bool created_threads_;
 
   // Members initialized in |MainMessageLoopStart()| ---------------------------
   scoped_ptr<base::MessageLoop> main_message_loop_;
@@ skipping 38 matching lines @@
   scoped_ptr<BrowserProcessSubThread> file_thread_;
   scoped_ptr<BrowserProcessSubThread> process_launcher_thread_;
   scoped_ptr<BrowserProcessSubThread> cache_thread_;
   scoped_ptr<BrowserProcessSubThread> io_thread_;
   scoped_ptr<base::Thread> indexed_db_thread_;
   scoped_ptr<MemoryObserver> memory_observer_;
   scoped_ptr<base::debug::TraceMemoryController> trace_memory_controller_;
   scoped_ptr<base::debug::TraceEventSystemStatsMonitor> system_stats_monitor_;
 
   bool is_tracing_startup_;
+  base::FilePath startup_trace_file_;
+
+  // This timer initiates trace file saving.
+  base::OneShotTimer<BrowserMainLoop> startup_trace_timer_;
 
   DISALLOW_COPY_AND_ASSIGN(BrowserMainLoop);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_BROWSER_MAIN_LOOP_H_