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// Copyright 2020 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include <algorithm>
#include "third_party/blink/public/common/frame/frame_ad_evidence.h"
namespace blink {
mojom::FilterListResult MoreRestrictiveFilterListEvidence(
mojom::FilterListResult a,
mojom::FilterListResult b) {
return std::max(a, b);
}
FrameAdEvidence::FrameAdEvidence(bool parent_is_ad)
: parent_is_ad_(parent_is_ad) {}
FrameAdEvidence::FrameAdEvidence(const FrameAdEvidence&) = default;
FrameAdEvidence::~FrameAdEvidence() = default;
bool FrameAdEvidence::IndicatesAdFrame() const {
DCHECK(is_complete_);
// We tag a frame as an ad if its parent is one, it was created by ad script
// or the frame has ever navigated to an URL matching a blocking rule.
return parent_is_ad_ ||
created_by_ad_script_ ==
mojom::FrameCreationStackEvidence::kCreatedByAdScript ||
most_restrictive_filter_list_result_ ==
mojom::FilterListResult::kMatchedBlockingRule;
}
void FrameAdEvidence::UpdateFilterListResult(mojom::FilterListResult value) {
latest_filter_list_result_ = value;
most_restrictive_filter_list_result_ = MoreRestrictiveFilterListEvidence(
most_restrictive_filter_list_result_, value);
}
} // namespace blink
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