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

ppapi/cpp/websocket.h

Index: ppapi/cpp/websocket.h
diff --git a/ppapi/cpp/websocket.h b/ppapi/cpp/websocket.h
index 8a4d6f45c14da846a0e05cff998bd61e338e5bf6..a34fdb7731ebfad36af041788f3a2e2c389340f5 100644
--- a/ppapi/cpp/websocket.h
+++ b/ppapi/cpp/websocket.h
@@ -94,7 +94,7 @@ class WebSocket : public Resource {
   /// 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);