Add different behavior to AwakableList for "persistent" vs "one-shot" awakables.

mojo/edk/system/message_pipe_dispatcher.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/message_pipe_dispatcher.h"
 
 #include <utility>
 
 #include "base/logging.h"
 #include "mojo/edk/system/configuration.h"
@@ skipping 185 matching lines @@
 
 HandleSignalsState MessagePipeDispatcher::GetHandleSignalsStateImplNoLock()
     const {
   mutex().AssertHeld();
   return message_pipe_->GetHandleSignalsState(port_);
 }
 
 MojoResult MessagePipeDispatcher::AddAwakableImplNoLock(
     Awakable* awakable,
     uint64_t context,
-    bool force,
+    bool persistent,
     MojoHandleSignals signals,
     HandleSignalsState* signals_state) {
   mutex().AssertHeld();
-  return message_pipe_->AddAwakable(port_, awakable, context, force, signals,
-                                    signals_state);
+  return message_pipe_->AddAwakable(port_, awakable, context, persistent,
+                                    signals, signals_state);
 }
 
 void MessagePipeDispatcher::RemoveAwakableImplNoLock(
     bool match_context,
     Awakable* awakable,
     uint64_t context,
     HandleSignalsState* signals_state) {
   mutex().AssertHeld();
   message_pipe_->RemoveAwakable(port_, match_context, awakable, context,
                                 signals_state);
@@ skipping 17 matching lines @@
 
   bool rv = message_pipe_->EndSerialize(port_, channel, destination,
                                         actual_size, platform_handles);
   message_pipe_ = nullptr;
   port_ = kInvalidPort;
   return rv;
 }
 
 }  // namespace system
 }  // namespace mojo