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diff --git a/Source/WebCore/testing/MockCDMFactory.h b/Source/WebCore/testing/MockCDMFactory.h
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+/*
+ * Copyright (C) 2016 Apple Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
+ * THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#pragma once
+
+#if ENABLE(ENCRYPTED_MEDIA)
+
+#include "CDM.h"
+#include "CDMInstance.h"
+#include "CDMPrivate.h"
+#include "MediaKeysRequirement.h"
+#include <wtf/HashMap.h>
+#include <wtf/RefCounted.h>
+#include <wtf/Vector.h>
+#include <wtf/WeakPtr.h>
+
+namespace WebCore {
+
+class MockCDMFactory : public RefCounted<MockCDMFactory>, private CDMFactory {
+public:
+    static Ref<MockCDMFactory> create() { return adoptRef(*new MockCDMFactory); }
+    ~MockCDMFactory();
+
+    const Vector<AtomicString>& supportedDataTypes() const { return m_supportedDataTypes; }
+    void setSupportedDataTypes(Vector<String>&&);
+
+    const Vector<MediaKeySessionType>& supportedSessionTypes() const { return m_supportedSessionTypes; }
+    void setSupportedSessionTypes(Vector<MediaKeySessionType>&& types) { m_supportedSessionTypes = WTFMove(types); }
+
+    const Vector<String>& supportedRobustness() const { return m_supportedRobustness; }
+    void setSupportedRobustness(Vector<String>&& robustness) { m_supportedRobustness = WTFMove(robustness); }
+
+    MediaKeysRequirement distinctiveIdentifiersRequirement() const { return m_distinctiveIdentifiersRequirement; }
+    void setDistinctiveIdentifiersRequirement(MediaKeysRequirement requirement) { m_distinctiveIdentifiersRequirement = requirement; }
+
+    MediaKeysRequirement persistentStateRequirement() const { return m_persistentStateRequirement; }
+    void setPersistentStateRequirement(MediaKeysRequirement requirement) { m_persistentStateRequirement = requirement; }
+
+    bool canCreateInstances() const { return m_canCreateInstances; }
+    void setCanCreateInstances(bool flag) { m_canCreateInstances = flag; }
+
+    bool supportsServerCertificates() const { return m_supportsServerCertificates; }
+    void setSupportsServerCertificates(bool flag) { m_supportsServerCertificates = flag; }
+
+    bool supportsSessions() const { return m_supportsSessions; }
+    void setSupportsSessions(bool flag) { m_supportsSessions = flag; }
+
+    void unregister();
+
+    bool hasSessionWithID(const String& id) { return m_sessions.contains(id); }
+    void removeSessionWithID(const String& id) { m_sessions.remove(id); }
+    void addKeysToSessionWithID(const String& id, Vector<Ref<SharedBuffer>>&&);
+    std::optional<const Vector<Ref<SharedBuffer>>&> keysForSessionWithID(const String& id) const;
+    Vector<Ref<SharedBuffer>> removeKeysFromSessionWithID(const String& id);
+
+private:
+    MockCDMFactory();
+    std::unique_ptr<CDMPrivate> createCDM(CDM&) final;
+    bool supportsKeySystem(const String&) final;
+
+    MediaKeysRequirement m_distinctiveIdentifiersRequirement { MediaKeysRequirement::Optional };
+    MediaKeysRequirement m_persistentStateRequirement { MediaKeysRequirement::Optional };
+    Vector<AtomicString> m_supportedDataTypes;
+    Vector<MediaKeySessionType> m_supportedSessionTypes;
+    Vector<String> m_supportedRobustness;
+    bool m_registered { true };
+    bool m_canCreateInstances { true };
+    bool m_supportsServerCertificates { true };
+    bool m_supportsSessions { true };
+    WeakPtrFactory<MockCDMFactory> m_weakPtrFactory;
+    HashMap<String, Vector<Ref<SharedBuffer>>> m_sessions;
+};
+
+class MockCDM : public CDMPrivate {
+public:
+    MockCDM(WeakPtr<MockCDMFactory>);
+
+    MockCDMFactory* factory() { return m_factory.get(); }
+
+private:
+    friend class MockCDMInstance;
+
+    bool supportsInitDataType(const AtomicString&) const final;
+    bool supportsConfiguration(const MediaKeySystemConfiguration&) const final;
+    bool supportsConfigurationWithRestrictions(const MediaKeySystemConfiguration&, const MediaKeysRestrictions&) const final;
+    bool supportsSessionTypeWithConfiguration(MediaKeySessionType&, const MediaKeySystemConfiguration&) const final;
+    bool supportsRobustness(const String&) const final;
+    MediaKeysRequirement distinctiveIdentifiersRequirement(const MediaKeySystemConfiguration&, const MediaKeysRestrictions&) const final;
+    MediaKeysRequirement persistentStateRequirement(const MediaKeySystemConfiguration&, const MediaKeysRestrictions&) const final;
+    bool distinctiveIdentifiersAreUniquePerOriginAndClearable(const MediaKeySystemConfiguration&) const final;
+    RefPtr<CDMInstance> createInstance() final;
+    void loadAndInitialize() final;
+    bool supportsServerCertificates() const final;
+    bool supportsSessions() const final;
+    bool supportsInitData(const AtomicString&, const SharedBuffer&) const final;
+    RefPtr<SharedBuffer> sanitizeResponse(const SharedBuffer&) const final;
+    std::optional<String> sanitizeSessionId(const String&) const final;
+
+    WeakPtr<MockCDMFactory> m_factory;
+    WeakPtrFactory<MockCDM> m_weakPtrFactory;
+};
+
+class MockCDMInstance : public CDMInstance {
+public:
+    MockCDMInstance(WeakPtr<MockCDM>);
+
+private:
+    SuccessValue initializeWithConfiguration(const MediaKeySystemConfiguration&) final;
+    SuccessValue setDistinctiveIdentifiersAllowed(bool) final;
+    SuccessValue setPersistentStateAllowed(bool) final;
+    SuccessValue setServerCertificate(Ref<SharedBuffer>&&) final;
+    void requestLicense(LicenseType, const AtomicString& initDataType, Ref<SharedBuffer>&& initData, LicenseCallback) final;
+    void updateLicense(const String&, LicenseType, const SharedBuffer&, LicenseUpdateCallback) final;
+    void loadSession(LicenseType, const String&, const String&, LoadSessionCallback) final;
+    void closeSession(const String&, CloseSessionCallback) final;
+    void removeSessionData(const String&, LicenseType, RemoveSessionDataCallback) final;
+    void storeRecordOfKeyUsage(const String&) final;
+
+    WeakPtr<MockCDM> m_cdm;
+    bool m_distinctiveIdentifiersAllowed { true };
+    bool m_persistentStateAllowed { true };
+};
+
+}
+
+#endif