WebCrypto: Add interfaces for importKey().

Source/modules/crypto/NormalizeAlgorithm.h

Index: Source/modules/crypto/NormalizeAlgorithm.h
diff --git a/Source/modules/crypto/NormalizeAlgorithm.h b/Source/modules/crypto/NormalizeAlgorithm.h
index 93d30db2f60e551d9b3d1dd4ac7a4f9c66abd721..634d4aafd1da981fcccbea9488a3fe654d66e5bd 100644
--- a/Source/modules/crypto/NormalizeAlgorithm.h
+++ b/Source/modules/crypto/NormalizeAlgorithm.h
@@ -31,8 +31,6 @@
 #ifndef NormalizeAlgorithm_h
 #define NormalizeAlgorithm_h
 
-#include "wtf/Assertions.h"
-
 namespace WebKit { class WebCryptoAlgorithm; }
 
 namespace WebCore {
@@ -55,8 +53,9 @@ enum AlgorithmOperation {
 };
 
 // Normalizes an algorithm identifier (dictionary) into a WebCryptoAlgorithm. If
-// normalization fails then returns false and sets |es|.
+// normalization fails then returns false and sets the ExceptionState.
 bool normalizeAlgorithm(const Dictionary&, AlgorithmOperation, WebKit::WebCryptoAlgorithm&, ExceptionState&) WARN_UNUSED_RETURN;
+bool normalizeAlgorithmForImportKey(const Dictionary&, WebKit::WebCryptoAlgorithm&, ExceptionState&) WARN_UNUSED_RETURN;
 
 } // namespace WebCore