WebSocket Pepper API: the second Close() should not return error code.

ppapi/cpp/websocket.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef PPAPI_CPP_WEBSOCKET_H_
 #define PPAPI_CPP_WEBSOCKET_H_
 
 #include "ppapi/c/ppb_websocket.h"
 #include "ppapi/cpp/resource.h"
 
@@ skipping 76 matching lines @@
   /// @return An int32_t containing an error code from
   /// <code>pp_errors.h</code>.
   /// Returns <code>PP_ERROR_BADARGUMENT</code> if <code>reason</code> contains
   /// an invalid character as a UTF-8 string, or is longer than 123 bytes.
   /// <code>PP_ERROR_BADARGUMENT</code> corresponds to a JavaScript
   /// SyntaxError in the WebSocket API specification.
   /// Returns <code>PP_ERROR_NOACCESS</code> if the code is not an integer
   /// equal to 1000 or in the range 3000 to 4999.
   /// <code>PP_ERROR_NOACCESS</code> corresponds to an InvalidAccessError in
   /// the WebSocket API specification. Returns <code>PP_ERROR_INPROGRESS</code>
-  /// if this is not the first call to Close().
+  /// if a previous call to Close() is not finished.
   int32_t Close(uint16_t code, const Var& reason,
                 const CompletionCallback& callback);
 
   /// ReceiveMessage() receives a message from the WebSocket server.
   /// This interface only returns a single message. That is, this interface
   /// must be called at least N times to receive N messages, no matter the size
   /// of each message.
   ///
   /// @param[out] message The received message is copied to provided
   /// <code>message</code>. The <code>message</code> must remain valid until
@@ skipping 96 matching lines @@
   /// @return Returns a <code>Var</code> of string type. If called before the
   /// connection is established, the <code>Var</code> contains the empty
   /// string. Returns a <code>PP_VARTYPE_UNDEFINED</code> if this function
   /// is called on an invalid resource.
   Var GetURL();
 };
 
 }  // namespace pp
 
 #endif  // PPAPI_CPP_WEBSOCKET_H_