Minor style cleanup in metrics_reporting_scheduler.*

chrome/browser/metrics/metrics_reporting_scheduler.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 CHROME_BROWSER_METRICS_METRICS_REPORTING_SCHEDULER_H_
 #define CHROME_BROWSER_METRICS_METRICS_REPORTING_SCHEDULER_H_
 #pragma once
 
 #include "base/basictypes.h"
 #include "base/callback.h"
@@ skipping 20 matching lines @@
   // Callback from MetricsService when a triggered upload is cancelled by the
   // MetricsService.
   void UploadCancelled();
 
  private:
   // Timer callback indicating it's time for the MetricsService to upload
   // metrics.
   void TriggerUpload();
 
   // Schedules a future call to TriggerUpload if one isn't already pending.
-  void ScheduleNextCallback();
+  void ScheduleNextUpload();
 
   // Increases the upload interval each time it's called, to handle the case
   // where the server is having issues.
   void BackOffUploadInterval();
 
   // The MetricsService method to call when uploading should happen.
-  base::Closure upload_callback_;
+  const base::Closure upload_callback_;
 
   base::OneShotTimer<MetricsReportingScheduler> upload_timer_;
 
   // The interval between being told an upload is done and starting the next
   // upload.
   base::TimeDelta upload_interval_;
 
   // Indicates that the scheduler is running (i.e., that Start has been called
   // more recently than Stop).
   bool running_;
 
   // Indicates that the last triggered upload hasn't resolved yet.
   bool callback_pending_;
 
   DISALLOW_COPY_AND_ASSIGN(MetricsReportingScheduler);
 };
 
 #endif  // CHROME_BROWSER_METRICS_METRICS_REPORTING_SCHEDULER_H_