Web MIDI: restore sysex receiving buffer synchronously

media/midi/midi_manager_win.cc

 // Copyright 2017 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/midi/midi_manager_win.h"
 
 #include <windows.h>
 
 #include <ks.h>
 #include <ksmedia.h>
@@ skipping 642 matching lines @@
     DCHECK_EQ(static_cast<UINT>(MIM_LONGDATA), msg);
     LPMIDIHDR hdr = reinterpret_cast<LPMIDIHDR>(param1);
     if (hdr->dwBytesRecorded > 0) {
       const uint8_t* src = reinterpret_cast<const uint8_t*>(hdr->lpData);
       std::vector<uint8_t> data;
       data.assign(src, src + hdr->dwBytesRecorded);
       manager->PostReplyTask(base::Bind(
           &MidiManagerWin::ReceiveMidiData, base::Unretained(manager), index,
           data, manager->port_manager()->CalculateInEventTime(index, param2)));
     }
-    manager->PostTask(base::Bind(&MidiManagerWin::PortManager::RestoreInBuffer,
-                                 base::Unretained(manager->port_manager()),
-                                 index));
+    manager->port_manager()->RestoreInBuffer(index);
   }
 }
 
 void CALLBACK
 MidiManagerWin::PortManager::HandleMidiOutCallback(HMIDIOUT hmo,
                                                    UINT msg,
                                                    DWORD_PTR instance,
                                                    DWORD_PTR param1,
                                                    DWORD_PTR param2) {
   if (msg == MOM_DONE) {
@@ skipping 202 matching lines @@
 
 MidiManager* MidiManager::Create(MidiService* service) {
   if (base::FeatureList::IsEnabled(features::kMidiManagerWinrt) &&
       base::win::GetVersion() >= base::win::VERSION_WIN10) {
     return new MidiManagerWinrt(service);
   }
   return new MidiManagerWin(service);
 }
 
 }  // namespace midi