Part 3.6: Is policy list subsumed under subsuming policy?

third_party/WebKit/Source/core/frame/csp/SourceListDirective.h

Index: third_party/WebKit/Source/core/frame/csp/SourceListDirective.h
diff --git a/third_party/WebKit/Source/core/frame/csp/SourceListDirective.h b/third_party/WebKit/Source/core/frame/csp/SourceListDirective.h
index 6a3bbd58a09897178dcb45bc8e92cb1a484fea46..cd01cb55202317704e3ce5af54632c2ce964ff27 100644
--- a/third_party/WebKit/Source/core/frame/csp/SourceListDirective.h
+++ b/third_party/WebKit/Source/core/frame/csp/SourceListDirective.h
@@ -56,6 +56,8 @@ class CORE_EXPORT SourceListDirective final : public CSPDirective {
   FRIEND_TEST_ALL_PREFIXES(SourceListDirectiveTest, GetIntersectCSPSources);
   FRIEND_TEST_ALL_PREFIXES(SourceListDirectiveTest,
                            GetIntersectCSPSourcesSchemes);
+  FRIEND_TEST_ALL_PREFIXES(SourceListDirectiveTest, GetIntersectNonces);
+  FRIEND_TEST_ALL_PREFIXES(SourceListDirectiveTest, GetIntersectHashes);
   FRIEND_TEST_ALL_PREFIXES(CSPDirectiveListTest, GetSourceVector);
   FRIEND_TEST_ALL_PREFIXES(CSPDirectiveListTest, OperativeDirectiveGivenType);
 
@@ -97,10 +99,15 @@ class CORE_EXPORT SourceListDirective final : public CSPDirective {
                              CSPSource*);
 
   bool hasSourceMatchInList(const KURL&, ResourceRequest::RedirectStatus) const;
+  HashSet<String> getIntersectNonces(const HashSet<String>& other) const;
+  HashSet<CSPHashValue> getIntersectHashes(
+      const HashSet<CSPHashValue>& other) const;
   HeapVector<Member<CSPSource>> getIntersectCSPSources(
       const HeapVector<Member<CSPSource>>& other) const;
   HeapHashMap<String, Member<CSPSource>> getIntersectSchemesOnly(
       const HeapVector<Member<CSPSource>>& other) const;
+  bool subsumesNoncesAndHashes(const HashSet<String>& nonces,
+                               const HashSet<CSPHashValue> hashes) const;
 
   Member<ContentSecurityPolicy> m_policy;
   HeapVector<Member<CSPSource>> m_list;