Allow audio system to handle synchronized low-latency audio I/O

content/browser/renderer_host/media/audio_renderer_host_unittest.cc

 // Copyright (c) 2012 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 "base/bind.h"
 #include "base/environment.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/message_loop.h"
 #include "base/process_util.h"
 #include "base/sync_socket.h"
@@ skipping 189 matching lines @@
     else
       format = media::AudioParameters::AUDIO_PCM_LINEAR;
 
     media::AudioParameters params(
         format, CHANNEL_LAYOUT_STEREO,
         media::AudioParameters::kAudioCDSampleRate, 16,
         media::AudioParameters::kAudioCDSampleRate / 10);
 
     // Send a create stream message to the audio output stream and wait until
     // we receive the created message.
-    host_->OnCreateStream(kStreamId, params);
+    host_->OnCreateStream(kStreamId, params, 0);
     message_loop_->Run();
   }
 
   void Close() {
     EXPECT_CALL(*observer_,
                 OnSetAudioStreamStatus(_, kStreamId, "closed"));
 
     // Send a message to AudioRendererHost to tell it we want to close the
     // stream.
     host_->OnCloseStream(kStreamId);
@@ skipping 171 matching lines @@
     EnableRealDevice();
 
   Create();
   Play();
   SimulateError();
   Close();
 }
 
 
 // TODO(hclam): Add tests for data conversation in low latency mode.