Expose the Crypto and SubtleCrypto interface objects

Source/modules/crypto/SubtleCrypto.idl

 /*
  * 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 19 matching lines @@
 
 // http://www.w3.org/TR/WebCryptoAPI/#subtlecrypto-interface
 
 typedef DOMString KeyFormat;
 typedef DOMString KeyUsage;
 typedef (Dictionary or DOMString) AlgorithmIdentifier;
 typedef (ArrayBuffer or ArrayBufferView) BufferSource;
 
 [
     GarbageCollected,
-    NoInterfaceObject,
+    Exposed=(Window,Worker)
 ] interface SubtleCrypto {
     [CallWith=ScriptState] Promise encrypt(AlgorithmIdentifier algorithm, CryptoKey key, BufferSource data);
     [CallWith=ScriptState] Promise decrypt(AlgorithmIdentifier algorithm, CryptoKey key, BufferSource data);
     [CallWith=ScriptState] Promise sign(AlgorithmIdentifier algorithm, CryptoKey key, BufferSource data);
     [CallWith=ScriptState, ImplementedAs=verifySignature] Promise verify(AlgorithmIdentifier algorithm, CryptoKey key, BufferSource signature, BufferSource data);
     [CallWith=ScriptState] Promise digest(AlgorithmIdentifier algorithm, BufferSource data);
     [CallWith=ScriptState] Promise generateKey(AlgorithmIdentifier algorithm, boolean extractable, sequence<KeyUsage> keyUsages);
     [CallWith=ScriptState] Promise importKey(KeyFormat format, (ArrayBuffer or ArrayBufferView or Dictionary) keyData, AlgorithmIdentifier algorithm, boolean extractable, sequence<KeyUsage> keyUsages);
     [CallWith=ScriptState] Promise exportKey(KeyFormat format, CryptoKey key);
     [CallWith=ScriptState] Promise deriveBits(AlgorithmIdentifier algorithm, CryptoKey baseKey, unsigned long length);
     [CallWith=ScriptState] Promise deriveKey(AlgorithmIdentifier algorithm, CryptoKey baseKey, AlgorithmIdentifier derivedKeyType, boolean extractable, sequence<KeyUsage> keyUsages);
     [CallWith=ScriptState] Promise wrapKey(KeyFormat format, CryptoKey key, CryptoKey wrappingKey, AlgorithmIdentifier wrapAlgorithm);
     [CallWith=ScriptState] Promise unwrapKey(KeyFormat format, BufferSource wrappedKey, CryptoKey unwrappingKey, AlgorithmIdentifier unwrapAlgorithm, AlgorithmIdentifier unwrappedKeyAlgorithm, boolean extractable, sequence<KeyUsage> keyUsages);
 };