Testing to determine why some trybots have issues with some PCMWave testing....

media/audio/win/waveout_output_win.cc

 // Copyright (c) 2006-2008 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 <windows.h>
 #include <mmsystem.h>
 #pragma comment(lib, "winmm.lib")
 
 #include "media/audio/win/waveout_output_win.h"
 
@@ skipping 59 matching lines @@
 
 bool PCMWaveOutAudioOutputStream::Open(size_t buffer_size) {
   if (state_ != PCMA_BRAND_NEW)
     return false;
   // Open the device. We'll be getting callback in WaveCallback function. They
   // occur in a magic, time-critical thread that windows creates.
   MMRESULT result = ::waveOutOpen(&waveout_, device_id_, &format_,
                                   reinterpret_cast<DWORD_PTR>(WaveCallback),
                                   reinterpret_cast<DWORD_PTR>(this),
                                   CALLBACK_FUNCTION);
-  if (result != MMSYSERR_NOERROR)
+  if (result != MMSYSERR_NOERROR) {
+    fprintf(stderr, "waveOutOpen error %d\n", result);
     return false;
-
+  }
   // If we don't have a packet size we use 100ms.
   if (!buffer_size)
     buffer_size = format_.nAvgBytesPerSec / 10;
 
   SetupBuffers(buffer_size);
   buffer_size_ = buffer_size;
   state_ = PCMA_READY;
   return true;
 }
 
@@ skipping 153 matching lines @@
     }
     obj->QueueNextPacket(buffer);
   } else if (msg == WOM_CLOSE) {
     // We can be closed before calling Start, so it is possible to have a
     // null callback at this point.
     if (obj->callback_)
       obj->callback_->OnClose(obj);
   }
 }