| // Copyright 2017 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef COMPONENTS_VARIATIONS_PLATFORM_FIELD_TRIALS_H_ |
| #define COMPONENTS_VARIATIONS_PLATFORM_FIELD_TRIALS_H_ |
| |
| #include "base/metrics/field_trial.h" |
| |
| namespace variations { |
| |
| // Infrastructure for setting up platform specific field trials. Chrome and |
| // WebView make use through their corresponding subclasses. |
| class PlatformFieldTrials { |
| public: |
| PlatformFieldTrials() = default; |
| virtual ~PlatformFieldTrials() = default; |
| |
| // Set up field trials for a specific platform. |
| virtual void SetupFieldTrials() = 0; |
| |
| // Create field trials that will control feature list features. This should be |
| // called during the same timing window as |
| // FeatureList::AssociateReportingFieldTrial. |has_seed| indicates that the |
| // variations service used a seed to create field trials. This can be used to |
| // prevent associating a field trial with a feature that you expect to be |
| // controlled by the variations seed. |
| virtual void SetupFeatureControllingFieldTrials( |
| bool has_seed, |
| base::FeatureList* feature_list) = 0; |
| |
| // Register any synthetic field trials. Will be called later than the above |
| // methods, in particular after g_browser_process is available.. |
| virtual void RegisterSyntheticTrials() {} |
| |
| private: |
| DISALLOW_COPY_AND_ASSIGN(PlatformFieldTrials); |
| }; |
| |
| } // namespace variations |
| |
| #endif // COMPONENTS_VARIATIONS_PLATFORM_FIELD_TRIALS_H_ |