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

mojo/edk/system/local_message_pipe_endpoint.cc

 // Copyright 2013 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.
 
 #include "mojo/edk/system/local_message_pipe_endpoint.h"
 
 #include <string.h>
 
 #include <utility>
 
@@ skipping 133 matching lines @@
   } else {
     rv.satisfied_signals |= MOJO_HANDLE_SIGNAL_PEER_CLOSED;
   }
   rv.satisfiable_signals |= MOJO_HANDLE_SIGNAL_PEER_CLOSED;
   return rv;
 }
 
 MojoResult LocalMessagePipeEndpoint::AddAwakable(
     Awakable* awakable,
     MojoHandleSignals signals,
+    bool force,
     uint64_t context,
     HandleSignalsState* signals_state) {
   DCHECK(is_open_);
 
   HandleSignalsState state = GetHandleSignalsState();
   if (state.satisfies(signals)) {
+    if (force)
+      awakable_list_.Add(awakable, signals, context);
     if (signals_state)
       *signals_state = state;
     return MOJO_RESULT_ALREADY_EXISTS;
   }
   if (!state.can_satisfy(signals)) {
     if (signals_state)
       *signals_state = state;
     return MOJO_RESULT_FAILED_PRECONDITION;
   }
 
   awakable_list_.Add(awakable, signals, context);
   return MOJO_RESULT_OK;
 }
 
 void LocalMessagePipeEndpoint::RemoveAwakable(
     Awakable* awakable,
     HandleSignalsState* signals_state) {
   DCHECK(is_open_);
   awakable_list_.Remove(awakable);
   if (signals_state)
     *signals_state = GetHandleSignalsState();
 }
 
 }  // namespace system
 }  // namespace mojo