WebCrypto: Add framework for AlgorithmIdentifier normalization.

Source/modules/crypto/AesKeyGenParams.cpp

Index: Source/modules/crypto/AesKeyGenParams.cpp
diff --git a/Source/modules/crypto/WorkerCrypto.cpp b/Source/modules/crypto/AesKeyGenParams.cpp
similarity index 83%
copy from Source/modules/crypto/WorkerCrypto.cpp
copy to Source/modules/crypto/AesKeyGenParams.cpp
index d77d0978de73288917dc7bb1fd259245715e5ff4..2fa560c367bfe2b5e97508575a6e366355cea57f 100644
--- a/Source/modules/crypto/WorkerCrypto.cpp
+++ b/Source/modules/crypto/AesKeyGenParams.cpp
@@ -29,13 +29,21 @@
  */
 
 #include "config.h"
-#include "modules/crypto/WorkerCrypto.h"
+#include "modules/crypto/AesKeyGenParams.h"
+
+#include "public/platform/WebCryptoAlgorithmParams.h"
 
 namespace WebCore {
 
-WorkerCrypto::WorkerCrypto()
+unsigned short AesKeyGenParams::length() const
 {
-    ScriptWrappable::init(this);
+    return m_algorithm.aesKeyGenParams()->length();
 }
 
+AesKeyGenParams::AesKeyGenParams(const WebKit::WebCryptoAlgorithm& algorithm)
+    : Algorithm(algorithm)
+{
+    ScriptWrappable::init(this);
 }
+
+} // namespace WebCore