Fix race condition in uploading feedback reports.

chrome/browser/feedback/feedback_report.h

 // Copyright 2014 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_FEEDBACK_FEEDBACK_REPORT_H_
 #define CHROME_BROWSER_FEEDBACK_FEEDBACK_REPORT_H_
 
 #include <string>
 
 #include "base/basictypes.h"
@@ skipping 25 matching lines @@
 
   // Stops the disk write of the report and deletes the report file if already
   // written.
   void DeleteReportOnDisk();
 
   const base::Time& upload_at() const { return upload_at_; }
   const std::string& data() const { return data_; }
 
   // Loads the reports still on disk and queues then using the given callback.
   // This call blocks on the file reads.
-  static void LoadReportsAndQueue(content::BrowserContext* context,
+  static void LoadReportsAndQueue(const base::FilePath& user_dir,
                                   QueueCallback callback);
 
  private:
   friend class base::RefCounted<FeedbackReport>;
   virtual ~FeedbackReport();
 
   // Name of the file corresponding to this report.
   base::FilePath file_;
 
   base::FilePath reports_path_;
   base::Time upload_at_;  // Upload this report at or after this time.
   std::string data_;
 
   scoped_refptr<base::SequencedTaskRunner> reports_task_runner_;
 
   DISALLOW_COPY_AND_ASSIGN(FeedbackReport);
 };
 
 }  // namespace feedback
 
 #endif  // CHROME_BROWSER_FEEDBACK_FEEDBACK_REPORT_H_