[webcrypto] Define the DOMException OperationError.

Source/modules/crypto/CryptoResultImpl.cpp

 /*
  * 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 47 matching lines @@
         return SyntaxError;
     case blink::WebCryptoErrorTypeInvalidState:
         return InvalidStateError;
     case blink::WebCryptoErrorTypeInvalidAccess:
         return InvalidAccessError;
     case blink::WebCryptoErrorTypeUnknown:
         return UnknownError;
     case blink::WebCryptoErrorTypeData:
         return DataError;
     case blink::WebCryptoErrorTypeOperation:
-        // FIXME: This exception type is new to WebCrypto and not yet defined.
-        // Use a placeholder for now.
-        return InvalidStateError;
+        return OperationError;
     case blink::WebCryptoErrorTypeType:
         // FIXME: This should construct a TypeError instead. For now do
         //        something to facilitate refactor, but this will need to be
         //        revisited.
         return DataError;
     }
 
     ASSERT_NOT_REACHED();
     return 0;
 }
@@ skipping 115 matching lines @@
     : m_promiseState(PromiseState::create(context))
 {
 }
 
 ScriptPromise CryptoResultImpl::promise()
 {
     return m_promiseState->promise();
 }
 
 } // namespace WebCore