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| 1 // Copyright 2013 The Chromium Authors. All rights reserved. | 1 // Copyright 2013 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 "chrome/browser/network_time/network_time_tracker.h" | 5 #include "components/network_time/network_time_tracker.h" |
| 6 | 6 |
| 7 #include "base/basictypes.h" | 7 #include "base/basictypes.h" |
| 8 #include "base/i18n/time_formatting.h" | 8 #include "base/i18n/time_formatting.h" |
| 9 #include "base/logging.h" | 9 #include "base/logging.h" |
| 10 #include "base/prefs/pref_registry_simple.h" | 10 #include "base/prefs/pref_registry_simple.h" |
| 11 #include "base/prefs/pref_service.h" | 11 #include "base/prefs/pref_service.h" |
| 12 #include "base/strings/utf_string_conversions.h" | 12 #include "base/strings/utf_string_conversions.h" |
| 13 #include "base/time/tick_clock.h" | 13 #include "base/time/tick_clock.h" |
| 14 #include "chrome/common/pref_names.h" | 14 #include "components/network_time/network_time_pref_names.h" |
| 15 |
| 16 namespace network_time { |
| 15 | 17 |
| 16 namespace { | 18 namespace { |
| 17 | 19 |
| 18 // Clock resolution is platform dependent. | 20 // Clock resolution is platform dependent. |
| 19 #if defined(OS_WIN) | 21 #if defined(OS_WIN) |
| 20 const int64 kTicksResolutionMs = base::Time::kMinLowResolutionThresholdMs; | 22 const int64 kTicksResolutionMs = base::Time::kMinLowResolutionThresholdMs; |
| 21 #else | 23 #else |
| 22 const int64 kTicksResolutionMs = 1; // Assume 1ms for non-windows platforms. | 24 const int64 kTicksResolutionMs = 1; // Assume 1ms for non-windows platforms. |
| 23 #endif | 25 #endif |
| 24 | 26 |
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| 112 DCHECK(thread_checker_.CalledOnValidThread()); | 114 DCHECK(thread_checker_.CalledOnValidThread()); |
| 113 DCHECK(network_time); | 115 DCHECK(network_time); |
| 114 if (network_time_.is_null()) | 116 if (network_time_.is_null()) |
| 115 return false; | 117 return false; |
| 116 DCHECK(!network_time_ticks_.is_null()); | 118 DCHECK(!network_time_ticks_.is_null()); |
| 117 *network_time = network_time_ + (time_ticks - network_time_ticks_); | 119 *network_time = network_time_ + (time_ticks - network_time_ticks_); |
| 118 if (uncertainty) | 120 if (uncertainty) |
| 119 *uncertainty = network_time_uncertainty_; | 121 *uncertainty = network_time_uncertainty_; |
| 120 return true; | 122 return true; |
| 121 } | 123 } |
| 124 |
| 125 } // namespace network_time |
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