Remove no-longer-needed IsBusy...() stuff.

mojo/edk/system/data_pipe.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.h"
 
 #include <string.h>
 
 #include <algorithm>
 #include <limits>
@@ skipping 439 matching lines @@
                                         platform_handles);
 
   ProducerCancelAllStateNoLock();
   producer_awakable_list_.reset();
   if (!has_local_consumer_no_lock())
     producer_open_ = false;
 
   return rv;
 }
 
-bool DataPipe::ProducerIsBusy() const {
-  MutexLocker locker(&mutex_);
-  return producer_in_two_phase_write_no_lock();
-}
-
 void DataPipe::ConsumerCancelAllState() {
   MutexLocker locker(&mutex_);
   ConsumerCancelAllStateNoLock();
 }
 
 void DataPipe::ConsumerClose() {
   MutexLocker locker(&mutex_);
   ConsumerCloseNoLock();
 }
 
@@ skipping 199 matching lines @@
                                         platform_handles);
 
   ConsumerCancelAllStateNoLock();
   consumer_awakable_list_.reset();
   if (!has_local_producer_no_lock())
     consumer_open_ = false;
 
   return rv;
 }
 
-bool DataPipe::ConsumerIsBusy() const {
-  MutexLocker locker(&mutex_);
-  return consumer_in_two_phase_read_no_lock();
-}
-
 DataPipe::DataPipe(bool has_local_producer,
                    bool has_local_consumer,
                    const MojoCreateDataPipeOptions& validated_options,
                    std::unique_ptr<DataPipeImpl> impl)
     : element_num_bytes_(validated_options.element_num_bytes),
       capacity_num_bytes_(validated_options.capacity_num_bytes),
       producer_open_(true),
       consumer_open_(true),
       producer_write_threshold_num_bytes_(0),
       consumer_read_threshold_num_bytes_(0),
@@ skipping 158 matching lines @@
   SetProducerClosedNoLock();
 }
 
 void DataPipe::SetConsumerClosed() {
   MutexLocker locker(&mutex_);
   SetConsumerClosedNoLock();
 }
 
 }  // namespace system
 }  // namespace mojo