--- a/content/base/public/nsIMozWebSocket.idl
+++ b/content/base/public/nsIMozWebSocket.idl
@@ -46,17 +46,17 @@ interface nsPIDOMWindow;
 
 /**
  * The nsIMozWebSocket interface enables Web applications to maintain
  * bidirectional communications with server-side processes as described in:
  *
  * http://dev.w3.org/html5/websockets/
  *
  */
-[scriptable, uuid(eae76132-e4a4-4765-8494-5e136521c846)]
+[scriptable, uuid(662691db-2b99-4461-801b-fbb72d99a4b9)]
 interface nsIMozWebSocket : nsISupports
 {
   readonly attribute DOMString url;
   readonly attribute DOMString protocol;
 
   //ready state
   const unsigned short CONNECTING = 0;
   const unsigned short OPEN = 1;
@@ -74,17 +74,17 @@ interface nsIMozWebSocket : nsISupports
 
   /**
    * Transmits data using the connection.
    *
    * @param data The data to be transmited.
    * @return if the connection is still established (and the data was queued or
    *         sent successfully).
    */
-  boolean send(in DOMString data);
+  void send(in DOMString data);
 
   /**
    * Closes the Web Socket connection or connection attempt, if any.
    * If the connection is already closed, it does nothing.
    */
   void close();
 
   /**

--- a/content/base/src/nsWebSocket.cpp
+++ b/content/base/src/nsWebSocket.cpp
@@ -1231,20 +1231,19 @@ nsWebSocket::GetBufferedAmount(PRUint32 
   }
 
 NS_WEBSOCKET_IMPL_DOMEVENTLISTENER(open, mOnOpenListener)
 NS_WEBSOCKET_IMPL_DOMEVENTLISTENER(error, mOnErrorListener)
 NS_WEBSOCKET_IMPL_DOMEVENTLISTENER(message, mOnMessageListener)
 NS_WEBSOCKET_IMPL_DOMEVENTLISTENER(close, mOnCloseListener)
 
 NS_IMETHODIMP
-nsWebSocket::Send(const nsAString& aData, PRBool *aRet)
+nsWebSocket::Send(const nsAString& aData)
 {
   NS_ABORT_IF_FALSE(NS_IsMainThread(), "Not running on main thread");
-  *aRet = PR_FALSE;
 
   if (mReadyState == nsIMozWebSocket::CONNECTING) {
     return NS_ERROR_DOM_INVALID_STATE_ERR;
   }
 
   // Check for unpaired surrogates.
   PRUint32 i, length = aData.Length();
   for (i = 0; i < length; ++i) {
@@ -1261,18 +1260,17 @@ nsWebSocket::Send(const nsAString& aData
   }
 
   if (mReadyState == nsIMozWebSocket::CLOSING ||
       mReadyState == nsIMozWebSocket::CLOSED) {
     mOutgoingBufferedAmount += NS_ConvertUTF16toUTF8(aData).Length();
     return NS_OK;
   }
 
-  nsresult rv = mConnection->PostMessage(PromiseFlatString(aData));
-  *aRet = NS_SUCCEEDED(rv);
+  mConnection->PostMessage(PromiseFlatString(aData));
 
   return NS_OK;
 }
 
 NS_IMETHODIMP
 nsWebSocket::Close()
 {
   NS_ABORT_IF_FALSE(NS_IsMainThread(), "Not running on main thread");