EDK: Change Awakable::Awake()'s context, etc., to be a uint64_t.

mojo/edk/system/data_pipe_producer_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/data_pipe_producer_dispatcher.h"
 
 #include <utility>
 
 #include "base/logging.h"
 #include "mojo/edk/system/data_pipe.h"
@@ skipping 152 matching lines @@
 
 HandleSignalsState DataPipeProducerDispatcher::GetHandleSignalsStateImplNoLock()
     const {
   mutex().AssertHeld();
   return data_pipe_->ProducerGetHandleSignalsState();
 }
 
 MojoResult DataPipeProducerDispatcher::AddAwakableImplNoLock(
     Awakable* awakable,
     MojoHandleSignals signals,
-    uint32_t context,
+    uint64_t context,
     HandleSignalsState* signals_state) {
   mutex().AssertHeld();
   return data_pipe_->ProducerAddAwakable(awakable, signals, context,
                                          signals_state);
 }
 
 void DataPipeProducerDispatcher::RemoveAwakableImplNoLock(
     Awakable* awakable,
     HandleSignalsState* signals_state) {
   mutex().AssertHeld();
@@ skipping 16 matching lines @@
   AssertHasOneRef();  // Only one ref => no need to take the lock.
 
   bool rv = data_pipe_->ProducerEndSerialize(channel, destination, actual_size,
                                              platform_handles);
   data_pipe_ = nullptr;
   return rv;
 }
 
 }  // namespace system
 }  // namespace mojo