WebCrypto: Add framework for AlgorithmIdentifier normalization.

Source/modules/crypto/NormalizeAlgorithm.h

Index: Source/modules/crypto/NormalizeAlgorithm.h
diff --git a/Source/modules/crypto/WorkerCrypto.h b/Source/modules/crypto/NormalizeAlgorithm.h
similarity index 71%
copy from Source/modules/crypto/WorkerCrypto.h
copy to Source/modules/crypto/NormalizeAlgorithm.h
index 5bbb3f5d39eba918f40aab6f91439d3993547e81..fdf1fd6299518a912e111769984786d87c8ebef5 100644
--- a/Source/modules/crypto/WorkerCrypto.h
+++ b/Source/modules/crypto/NormalizeAlgorithm.h
@@ -28,26 +28,37 @@
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#ifndef WorkerCrypto_h
-#define WorkerCrypto_h
+#ifndef NormalizeAlgorithm_h
+#define NormalizeAlgorithm_h
 
-#include "bindings/v8/ScriptWrappable.h"
-#include "wtf/Forward.h"
-#include "wtf/PassRefPtr.h"
-#include "wtf/RefCounted.h"
+#include "wtf/Assertions.h"
+
+namespace WebKit { class WebCryptoAlgorithm; }
 
 namespace WebCore {
 
-typedef int ExceptionCode;
+class Dictionary;
 
-class WorkerCrypto : public ScriptWrappable, public RefCounted<WorkerCrypto> {
-public:
-    static PassRefPtr<WorkerCrypto> create() { return adoptRef(new WorkerCrypto()); }
+typedef int ExceptionCode;
 
-private:
-    WorkerCrypto();
+enum AlgorithmOperation {
+    Encrypt,
+    Decrypt,
+    Sign,
+    Verify,
+    Digest,
+    GenerateKey,
+    DeriveKey,
+    WrapKey,
+    UnwrapKey,
+    // <---- End of list
+    NumberOfAlgorithmOperations,
 };
 
-}
+// Normalizes an algorithm identifier (dictionary) into a WebCryptoAlgorithm. If
+// normalization fails then returns false and sets |ec|.
+bool normalizeAlgorithm(const Dictionary&, AlgorithmOperation, WebKit::WebCryptoAlgorithm&, ExceptionCode&) WARN_UNUSED_RETURN;
+
+} // namespace WebCore
 
 #endif