WebCrypto: Remove support for multi-part operations.

Source/modules/crypto/SubtleCrypto.idl

Index: Source/modules/crypto/SubtleCrypto.idl
diff --git a/Source/modules/crypto/SubtleCrypto.idl b/Source/modules/crypto/SubtleCrypto.idl
index 9a632e55804ae223e08718cc2f55186992d3704b..9237c6ab6a9441069ebe06fa1121f0a428e8a70a 100644
--- a/Source/modules/crypto/SubtleCrypto.idl
+++ b/Source/modules/crypto/SubtleCrypto.idl
@@ -34,11 +34,11 @@ typedef any PromiseValue;
 [
     NoInterfaceObject,
 ] interface SubtleCrypto {
-    [RaisesException] CryptoOperation encrypt(Dictionary algorithm, Key key);
-    [RaisesException] CryptoOperation decrypt(Dictionary algorithm, Key key);
-    [RaisesException] CryptoOperation sign(Dictionary algorithm, Key key);
-    [RaisesException, ImplementedAs=verifySignature] CryptoOperation verify(Dictionary algorithm, Key key, ArrayBufferView signature);
-    [RaisesException] CryptoOperation digest(Dictionary algorithm);
+    [RaisesException] PromiseValue encrypt(Dictionary algorithm, Key key, ArrayBufferView data);
+    [RaisesException] PromiseValue decrypt(Dictionary algorithm, Key key, ArrayBufferView data);
+    [RaisesException] PromiseValue sign(Dictionary algorithm, Key key, ArrayBufferView data);
+    [RaisesException, ImplementedAs=verifySignature] PromiseValue verify(Dictionary algorithm, Key key, ArrayBufferView signature, ArrayBufferView data);
+    [RaisesException] PromiseValue digest(Dictionary algorithm, ArrayBufferView data);
 
     [RaisesException] PromiseValue generateKey(Dictionary algorithm, boolean extractable, DOMString[] keyUsages);
     [RaisesException] PromiseValue importKey(DOMString format, ArrayBufferView keyData, Dictionary algorithm, boolean extractable, DOMString[] keyUsages);