Remove "high"-latency audio code path

content/renderer/media/audio_device.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 "content/renderer/media/audio_device.h"
 
 #include "base/bind.h"
 #include "base/debug/trace_event.h"
 #include "base/message_loop.h"
 #include "base/time.h"
@@ skipping 133 matching lines @@
 }
 
 void AudioDevice::InitializeOnIOThread(const AudioParameters& params) {
   DCHECK_EQ(MessageLoop::current(), ChildProcess::current()->io_message_loop());
   // Make sure we don't create the stream more than once.
   DCHECK_EQ(0, stream_id_);
   if (stream_id_)
     return;
 
   stream_id_ = filter_->AddDelegate(this);
-  Send(new AudioHostMsg_CreateStream(stream_id_, params, true));
+  Send(new AudioHostMsg_CreateStream(stream_id_, params));
 }
 
 void AudioDevice::PlayOnIOThread() {
   DCHECK_EQ(MessageLoop::current(), ChildProcess::current()->io_message_loop());
   if (stream_id_ && is_started_)
     Send(new AudioHostMsg_PlayStream(stream_id_));
   else
     play_on_start_ = true;
 }
 
@@ skipping 35 matching lines @@
 void AudioDevice::OnRequestPacket(AudioBuffersState buffers_state) {
   // This method does not apply to the low-latency system.
 }
 
 void AudioDevice::OnStateChanged(AudioStreamState state) {
   if (state == kAudioStreamError) {
     DLOG(WARNING) << "AudioDevice::OnStateChanged(kError)";
   }
 }
 
-void AudioDevice::OnCreated(
-    base::SharedMemoryHandle handle, uint32 length) {
-  // Not needed in this simple implementation.
-}
-
 void AudioDevice::OnLowLatencyCreated(
     base::SharedMemoryHandle handle,
     base::SyncSocket::Handle socket_handle,
     uint32 length) {
   DCHECK_EQ(MessageLoop::current(), ChildProcess::current()->io_message_loop());
   DCHECK_GE(length, buffer_size_ * sizeof(int16) * channels_);
 #if defined(OS_WIN)
   DCHECK(handle);
   DCHECK(socket_handle);
 #else
@@ skipping 94 matching lines @@
 
   if (audio_thread_.get()) {
     // Close the socket to terminate the main thread function in the
     // audio thread.
     audio_socket_->Close();
     audio_socket_ = NULL;
     audio_thread_->Join();
     audio_thread_.reset(NULL);
   }
 }