Add an unconditional version of DispatcherAddAwakable(): AddAwakableUnconditional().

mojo/edk/system/data_pipe_producer_dispatcher.cc

Index: mojo/edk/system/data_pipe_producer_dispatcher.cc
diff --git a/mojo/edk/system/data_pipe_producer_dispatcher.cc b/mojo/edk/system/data_pipe_producer_dispatcher.cc
index e83444ffda9ce74384ff1d345020b4342bed9857..829c71d6a864a0fdf06da8ab16c7155908b996d3 100644
--- a/mojo/edk/system/data_pipe_producer_dispatcher.cc
+++ b/mojo/edk/system/data_pipe_producer_dispatcher.cc
@@ -170,10 +170,11 @@ HandleSignalsState DataPipeProducerDispatcher::GetHandleSignalsStateImplNoLock()
 MojoResult DataPipeProducerDispatcher::AddAwakableImplNoLock(
     Awakable* awakable,
     MojoHandleSignals signals,
+    bool force,
     uint64_t context,
     HandleSignalsState* signals_state) {
   mutex().AssertHeld();
-  return data_pipe_->ProducerAddAwakable(awakable, signals, context,
+  return data_pipe_->ProducerAddAwakable(awakable, signals, force, context,
                                          signals_state);
 }