Change audio renderer to communicate with host using low latency codepath.

media/audio/audio_output_controller.cc

 // Copyright (c) 2011 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/audio/audio_output_controller.h"
 
 #include "base/message_loop.h"
 
 namespace media {
 
 // Signal a pause in low-latency mode.
-static const int kPauseMark = -1;
+const int AudioOutputController::kPauseMark = -1;
 
 AudioOutputController::AudioOutputController(EventHandler* handler,
                                              uint32 capacity,
                                              SyncReader* sync_reader)
     : handler_(handler),
       stream_(NULL),
       volume_(1.0),
       state_(kEmpty),
       buffer_(0, capacity),
       pending_request_(false),
@@ skipping 290 matching lines @@
   buffers_state.pending_bytes += buffer_.forward_bytes();
 
   // If we need more data then call the event handler to ask for more data.
   // It is okay that we don't lock in this block because the parameters are
   // correct and in the worst case we are just asking more data than needed.
   base::AutoUnlock auto_unlock(lock_);
   handler_->OnMoreData(this, buffers_state);
 }
 
 }  // namespace media