[webcrypto] Add the KeyAlgorithm interface.

Source/modules/crypto/RsaHashedKeyAlgorithm.h

Index: Source/modules/crypto/RsaHashedKeyAlgorithm.h
diff --git a/Source/modules/serviceworkers/InstallPhaseEvent.h b/Source/modules/crypto/RsaHashedKeyAlgorithm.h
similarity index 75%
copy from Source/modules/serviceworkers/InstallPhaseEvent.h
copy to Source/modules/crypto/RsaHashedKeyAlgorithm.h
index da6f057a2cb65ff028f4bfd4d5648350850834d9..53ad9767082d87f1b807caef5b27467e873dee93 100644
--- a/Source/modules/serviceworkers/InstallPhaseEvent.h
+++ b/Source/modules/crypto/RsaHashedKeyAlgorithm.h
@@ -28,31 +28,29 @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#ifndef InstallPhaseEvent_h
-#define InstallPhaseEvent_h
+#ifndef RsaHashedKeyAlgorithm_h
+#define RsaHashedKeyAlgorithm_h
 
-#include "bindings/v8/ScriptValue.h"
-#include "core/events/Event.h"
+#include "modules/crypto/RsaKeyAlgorithm.h"
 
 namespace WebCore {
 
-class WaitUntilObserver;
-
-class InstallPhaseEvent : public Event {
+class RsaHashedKeyAlgorithm : public RsaKeyAlgorithm {
 public:
-    static PassRefPtr<InstallPhaseEvent> create();
+    static PassRefPtrWillBeRawPtr<RsaHashedKeyAlgorithm> create(const blink::WebCryptoKeyAlgorithm&);
 
-    virtual ~InstallPhaseEvent();
+    KeyAlgorithm* hash();
 
-    void waitUntil(const ScriptValue&);
+    virtual void trace(Visitor*) OVERRIDE;
 
-protected:
-    InstallPhaseEvent();
-    InstallPhaseEvent(const AtomicString& type, const EventInit&, PassRefPtr<WaitUntilObserver>);
+private:
+    explicit RsaHashedKeyAlgorithm(const blink::WebCryptoKeyAlgorithm&);
 
-    RefPtr<WaitUntilObserver> m_observer;
+    RefPtrWillBeMember<KeyAlgorithm> m_hash;
 };
 
+DEFINE_KEY_ALGORITHM_TYPE_CASTS(RsaHashedKeyAlgorithm);
+
 } // namespace WebCore
 
-#endif // InstallPhaseEvent_h
+#endif