WebCrypto: Add framework for AlgorithmIdentifier normalization.

Source/modules/crypto/CryptoOperation.cpp

Index: Source/modules/crypto/CryptoOperation.cpp
diff --git a/Source/core/fileapi/Stream.cpp b/Source/modules/crypto/CryptoOperation.cpp
similarity index 64%
copy from Source/core/fileapi/Stream.cpp
copy to Source/modules/crypto/CryptoOperation.cpp
index 2400e2b69665d8e532eb642d6bab50f41c276bbb..a3a9fd7495cafe35784db42593cf357e61d833d9 100644
--- a/Source/core/fileapi/Stream.cpp
+++ b/Source/modules/crypto/CryptoOperation.cpp
@@ -29,42 +29,43 @@
  */
 
 #include "config.h"
-#include "core/fileapi/Stream.h"
+#include "modules/crypto/CryptoOperation.h"
 
-#include "core/fileapi/BlobRegistry.h"
-#include "core/fileapi/BlobURL.h"
-#include "core/platform/network/BlobData.h"
+#include "modules/crypto/AesCbcParams.h"
+#include "modules/crypto/AesKeyGenParams.h"
+#include "modules/crypto/Algorithm.h"
 
 namespace WebCore {
 
-Stream::Stream(const String& mediaType)
-    : m_mediaType(mediaType)
-    , m_isNeutered(false)
-{
-    ScriptWrappable::init(this);
-
-    // Create a new internal URL for a stream and register it with the provided
-    // media type.
-    m_internalURL = BlobURL::createInternalURL();
-    BlobRegistry::registerStreamURL(m_internalURL, m_mediaType);
-}
+namespace {
 
-void Stream::addData(const char* data, size_t len)
+PassRefPtr<Algorithm> createAlgorithm(const WebKit::WebCryptoAlgorithm& algorithm)
 {
-    RefPtr<RawData> buffer(RawData::create());
-    buffer->mutableData()->resize(len);
-    memcpy(buffer->mutableData()->data(), data, len);
-    BlobRegistry::addDataToStream(m_internalURL, buffer);
+    switch (algorithm.paramsType()) {
+    case WebKit::WebCryptoAlgorithmParamsTypeNone:
+        return Algorithm::create(algorithm);
+    case WebKit::WebCryptoAlgorithmParamsTypeAesCbcParams:
+        return AesCbcParams::create(algorithm);
+    case WebKit::WebCryptoAlgorithmParamsTypeAesKeyGenParams:
+        return AesKeyGenParams::create(algorithm);
+    }
+    ASSERT_NOT_REACHED();
+    return 0;
 }
 
-void Stream::finalize()
+} // namespace
+
+CryptoOperation::CryptoOperation(const WebKit::WebCryptoAlgorithm& algorithm)
+    : m_algorithm(algorithm)
 {
-    BlobRegistry::finalizeStream(m_internalURL);
+    ScriptWrappable::init(this);
 }
 
-Stream::~Stream()
+Algorithm* CryptoOperation::algorithm()
 {
-    BlobRegistry::unregisterBlobURL(m_internalURL);
+    if (!m_algorithmNode)
+        m_algorithmNode = createAlgorithm(m_algorithm);
+    return m_algorithmNode.get();
 }
 
 } // namespace WebCore