Initial Implementation of Iframe Attribute for Feature Policy (Part 1)

third_party/WebKit/Source/core/html/WebFeaturePolicyFeatureHash.h

+// Copyright 2017 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.
+
+#ifndef WebFeaturePolicyFeatureHash_h
+#define WebFeaturePolicyFeatureHash_h
+
+#include "public/platform/WebFeaturePolicy.h"
+#include "wtf/HashSet.h"
+
+namespace WTF {
+
+template <>
+struct DefaultHash<blink::WebFeaturePolicyFeature> {
+  STATIC_ONLY(DefaultHash);
+  using Hash = IntHash<blink::WebFeaturePolicyFeature>;
+};
+
+template <>
+struct HashTraits<blink::WebFeaturePolicyFeature>
+    : GenericHashTraits<blink::WebFeaturePolicyFeature> {
+  STATIC_ONLY(HashTraits);
+  static bool isDeletedValue(const blink::WebFeaturePolicyFeature& value) {
+    return value == static_cast<blink::WebFeaturePolicyFeature>(-1);
+  }
+  static void constructDeletedValue(blink::WebFeaturePolicyFeature& slot,
+                                    bool) {
+    slot = static_cast<blink::WebFeaturePolicyFeature>(-1);
+  }
+};
+
+}  // namespace WTF
+
+#endif  // WebFeaturePolicyFeatureHash_h