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// Copyright 2016 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "third_party/blink/renderer/core/loader/private/frame_client_hints_preferences_context.h"
#include "base/stl_util.h"
#include "third_party/blink/renderer/core/dom/document.h"
#include "third_party/blink/renderer/core/frame/web_feature.h"
#include "third_party/blink/renderer/platform/instrumentation/use_counter.h"
namespace blink {
namespace {
// Mapping from WebClientHintsType to WebFeature. The ordering should match the
// ordering of enums in WebClientHintsType.
static constexpr WebFeature kWebFeatureMapping[] = {
WebFeature::kClientHintsDeviceMemory,
WebFeature::kClientHintsDPR,
WebFeature::kClientHintsResourceWidth,
WebFeature::kClientHintsViewportWidth,
WebFeature::kClientHintsRtt,
WebFeature::kClientHintsDownlink,
WebFeature::kClientHintsEct,
WebFeature::kClientHintsLang,
WebFeature::kClientHintsUA,
WebFeature::kClientHintsUAArch,
WebFeature::kClientHintsUAPlatform,
WebFeature::kClientHintsUAModel,
};
static_assert(static_cast<int>(mojom::WebClientHintsType::kMaxValue) + 1 ==
base::size(kWebFeatureMapping),
"unhandled client hint type");
} // namespace
FrameClientHintsPreferencesContext::FrameClientHintsPreferencesContext(
LocalFrame* frame)
: frame_(frame) {}
void FrameClientHintsPreferencesContext::CountClientHints(
mojom::WebClientHintsType type) {
UseCounter::Count(*frame_->GetDocument(),
kWebFeatureMapping[static_cast<int32_t>(type)]);
}
void FrameClientHintsPreferencesContext::CountPersistentClientHintHeaders() {
UseCounter::Count(*frame_->GetDocument(),
WebFeature::kPersistentClientHintHeader);
}
} // namespace blink
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