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

ppapi/api/ppb_websocket.idl

Index: ppapi/api/ppb_websocket.idl
diff --git a/ppapi/api/ppb_websocket.idl b/ppapi/api/ppb_websocket.idl
index 7ec3e1f699306403c4484ea2a1916fef625c5aa2..1e138bb80b47bf8a405a99177edef010c7321f7d 100644
--- a/ppapi/api/ppb_websocket.idl
+++ b/ppapi/api/ppb_websocket.idl
@@ -269,8 +269,8 @@ interface PPB_WebSocket {
    * 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().
+   * Returns <code>PP_ERROR_INPROGRESS</code> if a previous call to Close() is
+   * not finished.
    */
   int32_t Close([in] PP_Resource web_socket,
                 [in] uint16_t code,