WebCrypto: Add parsing for the algorithm parameter AesDerivedKey.

public/platform/WebCryptoAlgorithm.h

Index: public/platform/WebCryptoAlgorithm.h
diff --git a/public/platform/WebCryptoAlgorithm.h b/public/platform/WebCryptoAlgorithm.h
index 58f51b71cd34dbe0a67de53db91b9e16865e80b7..004e3348ba7724a600d3d4122a9491a498785db3 100644
--- a/public/platform/WebCryptoAlgorithm.h
+++ b/public/platform/WebCryptoAlgorithm.h
@@ -100,6 +100,7 @@ enum WebCryptoAlgorithmParamsType {
     WebCryptoAlgorithmParamsTypeEcKeyGenParams,
     WebCryptoAlgorithmParamsTypeEcKeyImportParams,
     WebCryptoAlgorithmParamsTypeEcdhKeyDeriveParams,
+    WebCryptoAlgorithmParamsTypeAesDerivedKeyParams,
 };
 
 struct WebCryptoAlgorithmInfo {
@@ -130,6 +131,7 @@ class WebCryptoEcdsaParams;
 class WebCryptoEcKeyGenParams;
 class WebCryptoEcKeyImportParams;
 class WebCryptoEcdhKeyDeriveParams;
+class WebCryptoAesDerivedKeyParams;
 
 class WebCryptoAlgorithmParams;
 class WebCryptoAlgorithmPrivate;
@@ -187,6 +189,7 @@ public:
     BLINK_PLATFORM_EXPORT const WebCryptoEcKeyGenParams* ecKeyGenParams() const;
     BLINK_PLATFORM_EXPORT const WebCryptoEcKeyImportParams* ecKeyImportParams() const;
     BLINK_PLATFORM_EXPORT const WebCryptoEcdhKeyDeriveParams* ecdhKeyDeriveParams() const;
+    BLINK_PLATFORM_EXPORT const WebCryptoAesDerivedKeyParams* aesDerivedKeyParams() const;
 
     // Returns true if the provided algorithm ID is for a hash (in other words, SHA-*)
     BLINK_PLATFORM_EXPORT static bool isHash(WebCryptoAlgorithmId);