Expose WebCrypto's algorithm normalization.

Source/web/WebScriptBindings.cpp

 /*
  * Copyright (C) 2013 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 13 matching lines @@
  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #include "config.h"
 #include "public/web/WebScriptBindings.h"
 
+#include "bindings/v8/Dictionary.h"
 #include "bindings/v8/V8Binding.h"
+#include "modules/crypto/CryptoResultImpl.h"
+#include "modules/crypto/NormalizeAlgorithm.h"
+#include "platform/CryptoResult.h"
+#include "public/platform/WebCryptoAlgorithm.h"
 #include "public/platform/WebString.h"
+#include <v8.h>
 
 using namespace WebCore;
 
 namespace blink {
 
 v8::Local<v8::String> WebScriptBindings::toV8String(const WebString& string, v8::Isolate* isolate)
 {
     return v8String(isolate, string);
 }
 
 WebString WebScriptBindings::toWebString(v8::Handle<v8::String> v8String)
 {
     return v8StringToWebCoreString<String>(v8String, Externalize);
 }
 
+WebCryptoAlgorithm WebScriptBindings::normalizeCryptoAlgorithm(v8::Handle<v8::Object> algorithmObject, AlgorithmOperation operation, int* exceptionCode, WebString* errorDetails, v8::Isolate* isolate)
+{
+    Dictionary algorithmDictionary = Dictionary(algorithmObject, isolate);
+    if (!algorithmDictionary.isUndefinedOrNull() && !algorithmDictionary.isObject())
+        return WebCryptoAlgorithm();
+    WebCryptoAlgorithm algorithm;
+    AlgorithmError error;
+    if (!normalizeAlgorithm(algorithmDictionary, operation, algorithm, &error)) {
+        *exceptionCode = webCryptoErrorToExceptionCode(error.errorType);
+        *errorDetails = error.errorDetails;
+        return WebCryptoAlgorithm();
+    }
+
+    return algorithm;
+}
+
 } // namespace blink