chromium/chrome/browser/privacy_budget/surface_set_valuation.cc

// Copyright 2021 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/privacy_budget/surface_set_valuation.h"

#include <algorithm>
#include <functional>
#include <limits>
#include <tuple>
#include <type_traits>

#include "base/check_op.h"
#include "base/containers/contains.h"
#include "base/numerics/safe_conversions.h"
#include "base/rand_util.h"
#include "base/ranges/algorithm.h"
#include "base/stl_util.h"
#include "chrome/browser/privacy_budget/representative_surface_set.h"
#include "chrome/browser/privacy_budget/surface_set_equivalence.h"
#include "chrome/common/privacy_budget/field_trial_param_conversions.h"
#include "chrome/common/privacy_budget/privacy_budget_features.h"
#include "chrome/common/privacy_budget/types.h"
#include "third_party/blink/public/common/privacy_budget/identifiable_surface.h"

namespace {

IdentifiableSurfaceCostMap GetPerSurfaceCostsFromFieldTrial() { … }

IdentifiableSurfaceTypeCostMap GetPerTypeCostsFromFieldTrial() { … }

}  // namespace

SurfaceSetValuation::SurfaceSetValuation(
    const SurfaceSetEquivalence& surface_set_equivalence)
    : … { … }

SurfaceSetValuation::~SurfaceSetValuation() = default;

// static
const double SurfaceSetValuation::kDefaultCost;

double SurfaceSetValuation::Cost(const IdentifiableSurfaceSet& set) const { … }

double SurfaceSetValuation::Cost(const RepresentativeSurfaceSet& set) const { … }

double SurfaceSetValuation::Cost(blink::IdentifiableSurface surface) const { … }

double SurfaceSetValuation::Cost(RepresentativeSurface surface) const { … }

double SurfaceSetValuation::IncrementalCost(
    const RepresentativeSurfaceSet& prior,
    RepresentativeSurface new_addition) const { … }

size_t SurfaceSetValuation::ExpectedSurfaceCountForCost(double cost) { … }