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1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2012 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 #include "components/metrics/profiler/tracking_synchronizer.h" | 5 #include "components/metrics/profiler/tracking_synchronizer.h" |
6 | 6 |
7 #include <stddef.h> | 7 #include <stddef.h> |
8 #include <utility> | 8 #include <utility> |
9 | 9 |
10 #include "base/bind.h" | 10 #include "base/bind.h" |
11 #include "base/callback.h" | 11 #include "base/callback.h" |
12 #include "base/metrics/histogram.h" | 12 #include "base/metrics/histogram.h" |
13 #include "base/thread_task_runner_handle.h" | |
14 #include "base/threading/thread.h" | 13 #include "base/threading/thread.h" |
| 14 #include "base/threading/thread_task_runner_handle.h" |
15 #include "base/tracked_objects.h" | 15 #include "base/tracked_objects.h" |
16 #include "components/metrics/profiler/tracking_synchronizer_observer.h" | 16 #include "components/metrics/profiler/tracking_synchronizer_observer.h" |
17 #include "components/variations/variations_associated_data.h" | 17 #include "components/variations/variations_associated_data.h" |
18 | 18 |
19 using base::TimeTicks; | 19 using base::TimeTicks; |
20 | 20 |
21 namespace metrics { | 21 namespace metrics { |
22 | 22 |
23 namespace { | 23 namespace { |
24 | 24 |
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369 | 369 |
370 ++last_used_sequence_number_; | 370 ++last_used_sequence_number_; |
371 | 371 |
372 // Watch out for wrapping to a negative number. | 372 // Watch out for wrapping to a negative number. |
373 if (last_used_sequence_number_ < 0) | 373 if (last_used_sequence_number_ < 0) |
374 last_used_sequence_number_ = 1; | 374 last_used_sequence_number_ = 1; |
375 return last_used_sequence_number_; | 375 return last_used_sequence_number_; |
376 } | 376 } |
377 | 377 |
378 } // namespace metrics | 378 } // namespace metrics |
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