Privitize WaitTillDataReady() and DataReady().

media/audio/pulse/pulse_input.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 "media/audio/pulse/pulse_input.h"
 
 #include <pulse/pulseaudio.h>
 
 #include "base/logging.h"
 #include "media/audio/pulse/audio_manager_pulse.h"
@@ skipping 260 matching lines @@
 
   int packet_size = params_.GetBytesPerBuffer();
   while (buffer_->forward_bytes() >= packet_size) {
     buffer_->Read(audio_data_buffer_.get(), packet_size);
     callback_->OnData(this, audio_data_buffer_.get(), packet_size,
                       hardware_delay, normalized_volume);
 
     if (buffer_->forward_bytes() < packet_size)
       break;
 
-    // TODO(xians): improve the code by implementing a WaitTillDataReady on the
-    // input side.
+    // TODO(xians): Remove once PPAPI is using circular buffers.
     DVLOG(1) << "OnData is being called consecutively, sleep 5ms to "
              << "wait until render consumes the data";
     base::PlatformThread::Sleep(base::TimeDelta::FromMilliseconds(5));
   }
 
   pa_threaded_mainloop_signal(pa_mainloop_, 0);
 }
 
 }  // namespace media