Reduce boilerplate when creating simple mojom::URLLoaders.

media/remoting/demuxer_stream_adapter.cc

 // Copyright 2016 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 "media/remoting/demuxer_stream_adapter.h"
 
 #include "base/base64.h"
 #include "base/bind.h"
 #include "base/callback_helpers.h"
 #include "media/base/bind_to_current_loop.h"
 #include "media/base/decoder_buffer.h"
 #include "media/base/timestamp_constants.h"
 #include "media/remoting/proto_enum_utils.h"
 #include "media/remoting/proto_utils.h"
 
 // Convenience logging macro used throughout this file.
 #define DEMUXER_VLOG(level) VLOG(level) << __func__ << "[" << name_ << "]: "
 
 namespace media {
 namespace remoting {
 
 // static
 mojo::DataPipe* DemuxerStreamAdapter::CreateDataPipe() {
   // Capacity in bytes for Mojo data pipe.
   constexpr int kMojoDataPipeCapacityInBytes = 512 * 1024;
-
-  MojoCreateDataPipeOptions options;
-  options.struct_size = sizeof(MojoCreateDataPipeOptions);
-  options.flags = MOJO_WRITE_DATA_FLAG_NONE;
-  options.element_num_bytes = 1;
-  options.capacity_num_bytes = kMojoDataPipeCapacityInBytes;
-  return new mojo::DataPipe(options);
+  return new mojo::DataPipe(kMojoDataPipeCapacityInBytes);
 }
 
 DemuxerStreamAdapter::DemuxerStreamAdapter(
     scoped_refptr<base::SingleThreadTaskRunner> main_task_runner,
     scoped_refptr<base::SingleThreadTaskRunner> media_task_runner,
     const std::string& name,
     DemuxerStream* demuxer_stream,
     const base::WeakPtr<RpcBroker>& rpc_broker,
     int rpc_handle,
     mojom::RemotingDataStreamSenderPtrInfo stream_sender_info,
@@ skipping 394 matching lines @@
   if (write_watcher_.IsWatching()) {
     DEMUXER_VLOG(2) << "Cancel mojo data pipe watcher";
     write_watcher_.Cancel();
   }
 
   base::ResetAndReturn(&error_callback_).Run(stop_trigger);
 }
 
 }  // namespace remoting
 }  // namespace media