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// Copyright 2019 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CHROME_BROWSER_PREDICTORS_PREDICTORS_FEATURES_H_
#define CHROME_BROWSER_PREDICTORS_PREDICTORS_FEATURES_H_
#include "base/feature_list.h"
#include "base/metrics/field_trial_params.h"
namespace features {
// All features in alphabetical order. The features should be documented
// alongside the definition of their values in the .cc file.
BASE_DECLARE_FEATURE(kLoadingPredictorUseLocalPredictions);
BASE_DECLARE_FEATURE(kLoadingOnlyLearnHighPriorityResources);
BASE_DECLARE_FEATURE(kLoadingPredictorTableConfig);
BASE_DECLARE_FEATURE(kLoadingPreconnectToRedirectTarget);
BASE_DECLARE_FEATURE(kLoadingPredictorDisregardAlwaysAccessesNetwork);
BASE_DECLARE_FEATURE(kLoadingPredictorUseOptimizationGuide);
BASE_DECLARE_FEATURE(kLoadingPredictorPrefetch);
enum class PrefetchSubresourceType { kAll, kCss, kJsAndCss };
extern const base::FeatureParam<PrefetchSubresourceType>
kLoadingPredictorPrefetchSubresourceType;
BASE_DECLARE_FEATURE(kLoadingPredictorPrefetchUseReadAndDiscardBody);
// Returns whether local predictions should be used to make preconnect
// predictions.
bool ShouldUseLocalPredictions();
// Returns whether optimization guide predictions should be used to make
// loading predictions, such as preconnect or prefetch.
//
// In addition to checking whether the feature is enabled, this will
// additionally check a feature parameter is specified to dictate if the
// predictions should actually be used.
bool ShouldUseOptimizationGuidePredictions();
// Returns whether optimization guide predictions should always be retrieved,
// even if local predictions are available for preconnect predictions.
bool ShouldAlwaysRetrieveOptimizationGuidePredictions();
BASE_DECLARE_FEATURE(kLoadingPredictorLimitPreconnectSocketCount);
BASE_DECLARE_FEATURE(kPrefetchManagerUseNetworkContextPrefetch);
} // namespace features
#endif // CHROME_BROWSER_PREDICTORS_PREDICTORS_FEATURES_H_
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