OLD | NEW |
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 #ifndef CHROME_BROWSER_CHROME_BROWSER_FIELD_TRIALS_H_ | 5 #ifndef CHROME_BROWSER_CHROME_BROWSER_FIELD_TRIALS_H_ |
6 #define CHROME_BROWSER_CHROME_BROWSER_FIELD_TRIALS_H_ | 6 #define CHROME_BROWSER_CHROME_BROWSER_FIELD_TRIALS_H_ |
7 | 7 |
8 #include "base/command_line.h" | 8 #include "base/command_line.h" |
9 #include "base/macros.h" | 9 #include "base/macros.h" |
10 | 10 |
11 namespace base { | 11 namespace base { |
12 class FeatureList; | 12 class FeatureList; |
13 class Time; | |
14 } | 13 } |
15 | 14 |
16 class ChromeBrowserFieldTrials { | 15 class ChromeBrowserFieldTrials { |
17 public: | 16 public: |
18 explicit ChromeBrowserFieldTrials(const base::CommandLine& command_line); | 17 explicit ChromeBrowserFieldTrials(const base::CommandLine& command_line); |
19 ~ChromeBrowserFieldTrials(); | 18 ~ChromeBrowserFieldTrials(); |
20 | 19 |
21 void SetupFieldTrials(); | 20 void SetupFieldTrials(); |
22 | 21 |
23 // Create field trials that will control feature list features. This should be | 22 // Create field trials that will control feature list features. This should be |
24 // called during the same timing window as | 23 // called during the same timing window as |
25 // FeatureList::AssociateReportingFieldTrial. |has_seed| indicates that the | 24 // FeatureList::AssociateReportingFieldTrial. |has_seed| indicates that the |
26 // variations service used a seed to create field trials. This can be used to | 25 // variations service used a seed to create field trials. This can be used to |
27 // prevent associating a field trial with a feature that you expect to be | 26 // prevent associating a field trial with a feature that you expect to be |
28 // controlled by the variations seed. | 27 // controlled by the variations seed. |
29 void SetupFeatureControllingFieldTrials(bool has_seed, | 28 void SetupFeatureControllingFieldTrials(bool has_seed, |
30 base::FeatureList* feature_list); | 29 base::FeatureList* feature_list); |
31 | 30 |
32 private: | 31 private: |
33 // Instantiates dynamic trials by querying their state, to ensure they get | 32 // Instantiates dynamic trials by querying their state, to ensure they get |
34 // reported as used. | 33 // reported as used. |
35 void InstantiateDynamicTrials(); | 34 void InstantiateDynamicTrials(); |
36 | 35 |
37 const base::CommandLine& parsed_command_line_; | 36 const base::CommandLine& parsed_command_line_; |
38 | 37 |
39 DISALLOW_COPY_AND_ASSIGN(ChromeBrowserFieldTrials); | 38 DISALLOW_COPY_AND_ASSIGN(ChromeBrowserFieldTrials); |
40 }; | 39 }; |
41 | 40 |
42 #endif // CHROME_BROWSER_CHROME_BROWSER_FIELD_TRIALS_H_ | 41 #endif // CHROME_BROWSER_CHROME_BROWSER_FIELD_TRIALS_H_ |
OLD | NEW |