Revert 174726 "[webcrypto] Remove RSA-ES support (3 of 3)"

trunk/Source/platform/exported/WebCryptoAlgorithm.cpp

Index: trunk/Source/platform/exported/WebCryptoAlgorithm.cpp
===================================================================
--- trunk/Source/platform/exported/WebCryptoAlgorithm.cpp	(revision 174732)
+++ trunk/Source/platform/exported/WebCryptoAlgorithm.cpp	(working copy)
@@ -123,6 +123,14 @@
     return 0;
 }
 
+const WebCryptoRsaKeyGenParams* WebCryptoAlgorithm::rsaKeyGenParams() const
+{
+    ASSERT(!isNull());
+    if (paramsType() == WebCryptoAlgorithmParamsTypeRsaKeyGenParams)
+        return static_cast<WebCryptoRsaKeyGenParams*>(m_private->params.get());
+    return 0;
+}
+
 const WebCryptoAesGcmParams* WebCryptoAlgorithm::aesGcmParams() const
 {
     ASSERT(!isNull());
@@ -166,6 +174,7 @@
     case WebCryptoAlgorithmIdAesCbc:
     case WebCryptoAlgorithmIdHmac:
     case WebCryptoAlgorithmIdRsaSsaPkcs1v1_5:
+    case WebCryptoAlgorithmIdRsaEsPkcs1v1_5:
     case WebCryptoAlgorithmIdAesGcm:
     case WebCryptoAlgorithmIdRsaOaep:
     case WebCryptoAlgorithmIdAesCtr: