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| 1 // Copyright (c) 2006-2008 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2006-2008 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 | 5 |
| 6 #include "base/field_trial.h" | 6 #include "base/field_trial.h" |
| 7 #include "base/logging.h" | 7 #include "base/logging.h" |
| 8 #include "base/rand_util.h" | 8 #include "base/rand_util.h" |
| 9 | 9 |
| 10 using base::Time; |
| 11 |
| 10 //------------------------------------------------------------------------------ | 12 //------------------------------------------------------------------------------ |
| 11 // FieldTrialList methods and members. | 13 // FieldTrialList methods and members. |
| 12 | 14 |
| 13 // static | 15 // static |
| 14 FieldTrialList* FieldTrialList::global_ = NULL; | 16 FieldTrialList* FieldTrialList::global_ = NULL; |
| 15 | 17 |
| 16 // static | 18 // static |
| 17 int FieldTrialList::constructor_count_ = 0; | 19 int FieldTrialList::constructor_count_ = 0; |
| 18 | 20 |
| 19 FieldTrialList::FieldTrialList() | 21 FieldTrialList::FieldTrialList() |
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| 53 //------------------------------------------------------------------------------ | 55 //------------------------------------------------------------------------------ |
| 54 // FieldTrial methods and members. | 56 // FieldTrial methods and members. |
| 55 | 57 |
| 56 FieldTrial::FieldTrial(const std::wstring& name, double probability) | 58 FieldTrial::FieldTrial(const std::wstring& name, double probability) |
| 57 : name_(name) { | 59 : name_(name) { |
| 58 double rand = base::RandDouble(); | 60 double rand = base::RandDouble(); |
| 59 DCHECK(rand >= 0.0 && rand < 1.0); | 61 DCHECK(rand >= 0.0 && rand < 1.0); |
| 60 boolean_value_ = rand < probability; | 62 boolean_value_ = rand < probability; |
| 61 FieldTrialList::Register(this); | 63 FieldTrialList::Register(this); |
| 62 } | 64 } |
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