Cleaned up some constants for stats reading

chrome/browser/chromeos/boot_times_loader.h

 // Copyright (c) 2009 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_CHROMEOS_BOOT_TIMES_LOADER_H_
 #define CHROME_BROWSER_CHROMEOS_BOOT_TIMES_LOADER_H_
 
 #include <string>
 
 #include "base/callback.h"
@@ skipping 36 matching lines @@
   // Signature
   typedef Callback2<Handle, BootTimes>::Type GetBootTimesCallback;
 
   typedef CancelableRequest<GetBootTimesCallback> GetBootTimesRequest;
 
   // Asynchronously requests the info.
   Handle GetBootTimes(
       CancelableRequestConsumerBase* consumer,
       GetBootTimesCallback* callback);
 
+  // Records current uptime and disk usage for metrics use.
+  // Posts task to file thread.
+  // name will be used as part of file names in /tmp.
+  // Existing stats files will not be overwritten.
+  static void RecordCurrentStats(const std::string& name);
+
+  // Saves away the stats at main, so the can be recorded later. At main() time
+  // the necessary threads don't exist yet for recording the data.
+  static void SaveChromeMainStats();
+
+  // Records the data previously saved by SaveChromeMainStats(), using the
+  // file thread.
+  // Existing stats files will not be overwritten.
+  static void RecordChromeMainStats();
+
  private:
   // BootTimesLoader calls into the Backend on the file thread to load
   // and extract the boot times.
   class Backend : public base::RefCountedThreadSafe<Backend> {
    public:
     Backend() {}
 
     void GetBootTimes(scoped_refptr<GetBootTimesRequest> request);
 
    private:
     friend class base::RefCountedThreadSafe<Backend>;
 
     ~Backend() {}
 
     DISALLOW_COPY_AND_ASSIGN(Backend);
   };
 
   scoped_refptr<Backend> backend_;
 
   DISALLOW_COPY_AND_ASSIGN(BootTimesLoader);
 };
 
 }  // namespace chromeos
 
 #endif  // CHROME_BROWSER_CHROMEOS_BOOT_TIMES_LOADER_H_