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// Copyright 2025 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chrome/browser/preloading/search_preload/search_preload_features.h"
#include "base/feature_list.h"
#include "base/metrics/field_trial_params.h"
#include "base/system/sys_info.h"
#include "components/omnibox/browser/omnibox.mojom-shared.h"
namespace features {
BASE_FEATURE(kDsePreload2, "DsePreload2", base::FEATURE_DISABLED_BY_DEFAULT);
const base::FeatureParam<bool> kDsePreload2UsePreloadServingMetrics{
&kDsePreload2, "kDsePreload2UsePreloadServingMetrics", false};
const base::FeatureParam<size_t> kDsePreload2DeviceMemoryThresholdMiB{
&kDsePreload2, "kDsePreload2DeviceMemoryThresholdMiB",
// 3 GiB = 3 * 2**10 * 2**20
3072};
const base::FeatureParam<base::TimeDelta> kDsePreload2ErrorBackoffDuration{
&kDsePreload2, "kDsePreload2ErrorBackoffDuration",
base::Milliseconds(60000)};
const base::FeatureParam<size_t> kDsePreload2MaxPrefetch{
&kDsePreload2, "kDsePreload2MaxPrefetch", 7};
const base::FeatureParam<base::TimeDelta> kDsePreload2PrefetchTtl{
&kDsePreload2, "kDsePreload2PrefetchTtl", base::Milliseconds(60000)};
BASE_FEATURE(kDsePreload2OnPress,
"DsePreload2OnPress",
base::FEATURE_DISABLED_BY_DEFAULT);
const base::FeatureParam<bool> kDsePreload2OnPressMouseDown{
&kDsePreload2, "kDsePreload2OnPressMouseDown", true};
const base::FeatureParam<bool> kDsePreload2OnPressUpOrDownArrowButton{
&kDsePreload2, "kDsePreload2OnPressUpOrDownArrowButton", true};
const base::FeatureParam<bool> kDsePreload2OnPressTouchDown{
&kDsePreload2, "kDsePreload2OnPressTouchDown", true};
BASE_FEATURE(kDsePreload2OnPressIncognito,
"DsePreload2OnPressIncognito",
base::FEATURE_DISABLED_BY_DEFAULT);
BASE_FEATURE(kDsePreload2OnSuggestNonDefalutMatch,
"kDsePreload2OnSuggestNonDefalutMatch",
base::FEATURE_DISABLED_BY_DEFAULT);
bool IsDsePreload2Enabled() {
return base::FeatureList::IsEnabled(kDsePreload2) &&
static_cast<size_t>(base::SysInfo::AmountOfPhysicalMemory().InMiB()) >=
kDsePreload2DeviceMemoryThresholdMiB.Get();
}
bool IsDsePreload2OnPressEnabled() {
return base::FeatureList::IsEnabled(kDsePreload2) &&
base::FeatureList::IsEnabled(kDsePreload2OnPress);
}
bool DsePreload2OnPressIsPredictorEnabled(
omnibox::mojom::NavigationPredictor navigation_predictor) {
switch (navigation_predictor) {
case omnibox::mojom::NavigationPredictor::kMouseDown:
return kDsePreload2OnPressMouseDown.Get();
case omnibox::mojom::NavigationPredictor::kUpOrDownArrowButton:
return kDsePreload2OnPressUpOrDownArrowButton.Get();
case omnibox::mojom::NavigationPredictor::kTouchDown:
return kDsePreload2OnPressTouchDown.Get();
}
}
bool IsDsePreload2OnPressIncognitoEnabled() {
return IsDsePreload2OnPressEnabled() &&
base::FeatureList::IsEnabled(kDsePreload2OnPressIncognito);
}
} // namespace features
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