WebCrypto: Check for HmacKeyParams when seeing if a Key can be used for an Algorithm.

Source/modules/crypto/Key.h

Index: Source/modules/crypto/Key.h
diff --git a/Source/modules/crypto/Key.h b/Source/modules/crypto/Key.h
index 4ea03f9bc0d2857c41dd3c1a9e93c375dfbe957a..77f3da11161f83111f4a73fc3499061eec2f5318 100644
--- a/Source/modules/crypto/Key.h
+++ b/Source/modules/crypto/Key.h
@@ -32,6 +32,7 @@
 #define Key_h
 
 #include "bindings/v8/ScriptWrappable.h"
+#include "modules/crypto/NormalizeAlgorithm.h"
 #include "public/platform/WebCryptoKey.h"
 #include "wtf/Forward.h"
 #include "wtf/PassRefPtr.h"
@@ -55,6 +56,8 @@ public:
 
     const WebKit::WebCryptoKey& key() const { return m_key; }
 
+    bool canBeUsedForAlgorithm(const WebKit::WebCryptoAlgorithm&, AlgorithmOperation, ExceptionState&) const;
+
     static bool parseFormat(const String&, WebKit::WebCryptoKeyFormat&);
 
     // Parses KeyUsage strings to a WebCryptoKeyUsageMask. If any element is