WebCrypto: Add algorithm normalization rules for RSASSA-PKCS1-v1_5.

Source/modules/crypto/RsaSsaParams.cpp

Index: Source/modules/crypto/RsaSsaParams.cpp
diff --git a/Source/modules/crypto/HmacParams.cpp b/Source/modules/crypto/RsaSsaParams.cpp
similarity index 87%
copy from Source/modules/crypto/HmacParams.cpp
copy to Source/modules/crypto/RsaSsaParams.cpp
index c5bd9cf90c2b64c24f596f0687a29570f683a7b6..89e6aca12afad5fc31e068c25328295afca719b5 100644
--- a/Source/modules/crypto/HmacParams.cpp
+++ b/Source/modules/crypto/RsaSsaParams.cpp
@@ -29,22 +29,23 @@
  */
 
 #include "config.h"
-#include "modules/crypto/HmacParams.h"
+#include "modules/crypto/RsaSsaParams.h"
 
 #include "public/platform/WebCryptoAlgorithmParams.h"
 
 namespace WebCore {
 
-Algorithm* HmacParams::hash()
+Algorithm* RsaSsaParams::hash()
 {
     if (!m_hash)
-        m_hash = Algorithm::create(m_algorithm.hmacParams()->hash());
+        m_hash = Algorithm::create(m_algorithm.rsaSsaParams()->hash());
     return m_hash.get();
 }
 
-HmacParams::HmacParams(const WebKit::WebCryptoAlgorithm& algorithm)
+RsaSsaParams::RsaSsaParams(const WebKit::WebCryptoAlgorithm& algorithm)
     : Algorithm(algorithm)
 {
+    ASSERT(algorithm.rsaSsaParams());
     ScriptWrappable::init(this);
 }