chrome/browser/chrome_browser_field_trials.h

   1 // Copyright 2012 The Chromium Authors
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef CHROME_BROWSER_CHROME_BROWSER_FIELD_TRIALS_H_
   6 #define CHROME_BROWSER_CHROME_BROWSER_FIELD_TRIALS_H_
   7
   8 #include "base/memory/raw_ptr.h"
   9 #include "components/variations/platform_field_trials.h"
  10
  11 #if BUILDFLAG(IS_ANDROID)
  12 #include "components/variations/variations_associated_data.h"
  13 #endif
  14
  15 class PrefService;
  16
  17 namespace base {
  18 class FeatureList;
  19 }
  20
  21 class ChromeBrowserFieldTrials : public variations::PlatformFieldTrials {
  22  public:
  23   explicit ChromeBrowserFieldTrials(PrefService* local_state);
  24
  25   ChromeBrowserFieldTrials(const ChromeBrowserFieldTrials&) = delete;
  26   ChromeBrowserFieldTrials& operator=(const ChromeBrowserFieldTrials&) = delete;
  27
  28   ~ChromeBrowserFieldTrials() override;
  29
  30   // variations::PlatformFieldTrials:
  31   void OnVariationsSetupComplete() override;
  32   void SetUpClientSideFieldTrials(
  33       bool has_seed,
  34       const variations::EntropyProviders& entropy_providers,
  35       base::FeatureList* feature_list) override;
  36   void RegisterSyntheticTrials() override;
  37
  38  private:
  39   // Weak pointer to the local state prefs store.
  40   const raw_ptr<PrefService, AcrossTasksDanglingUntriaged> local_state_;
  41
  42 #if BUILDFLAG(IS_ANDROID)
  43   // VariationID to be used for FREMobileIdentityConsistencyFieldTrial.
  44   // Set by SetUpClientSideTrials(...) and then used by
  45   // RegisterSyntheticTrials().
  46   variations::VariationID fre_consistency_trial_variation_id_ =
  47       variations::EMPTY_ID;
  48 #endif  // BUILDFLAG(IS_ANDROID)
  49 };
  50
  51 #endif  // CHROME_BROWSER_CHROME_BROWSER_FIELD_TRIALS_H_