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| 1 // Copyright 2016 The Chromium Authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. |
| 4 |
| 5 #ifndef CHROME_INSTALLER_SETUP_INSTALLER_METRICS_H_ |
| 6 #define CHROME_INSTALLER_SETUP_INSTALLER_METRICS_H_ |
| 7 |
| 8 namespace base { |
| 9 class FilePath; |
| 10 } // namespace base |
| 11 |
| 12 namespace installer { |
| 13 |
| 14 // Creates a persistent space for any histograms that can be reported later |
| 15 // by the browser process. It should be called as early as possible in the |
| 16 // process lifetime and never called again. |
| 17 void BeginPersistentHistogramStorage(); |
| 18 |
| 19 // Saves all the persistent histograms to a single file on disk for reading |
| 20 // by the browser so it can be reported. It is generally called once during |
| 21 // process exit. Multiple calls to this are possible if "snapshots" are |
| 22 // desired; they are cumulative in what is saved, not just what has changed |
| 23 // since the previous call. |
| 24 void EndPersistentHistogramStorage(const base::FilePath& target_dir); |
| 25 |
| 26 } // namespace installer |
| 27 |
| 28 #endif // CHROME_INSTALLER_SETUP_INSTALLER_METRICS_H_ |
| 29 |
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