Remove unused flush operation from Chromium audio.

content/browser/renderer_host/media/audio_renderer_host.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/browser/renderer_host/media/audio_renderer_host.h"
 
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/metrics/histogram.h"
 #include "base/process.h"
@@ skipping 243 matching lines @@
 // IPC Messages handler
 bool AudioRendererHost::OnMessageReceived(const IPC::Message& message,
                                           bool* message_was_ok) {
   bool handled = true;
   IPC_BEGIN_MESSAGE_MAP_EX(AudioRendererHost, message, *message_was_ok)
     IPC_MESSAGE_HANDLER(AudioHostMsg_CreateStream, OnCreateStream)
     IPC_MESSAGE_HANDLER(AudioHostMsg_AssociateStreamWithProducer,
                         OnAssociateStreamWithProducer)
     IPC_MESSAGE_HANDLER(AudioHostMsg_PlayStream, OnPlayStream)
     IPC_MESSAGE_HANDLER(AudioHostMsg_PauseStream, OnPauseStream)
-    IPC_MESSAGE_HANDLER(AudioHostMsg_FlushStream, OnFlushStream)
     IPC_MESSAGE_HANDLER(AudioHostMsg_CloseStream, OnCloseStream)
     IPC_MESSAGE_HANDLER(AudioHostMsg_SetVolume, OnSetVolume)
     IPC_MESSAGE_UNHANDLED(handled = false)
   IPC_END_MESSAGE_MAP_EX()
 
   return handled;
 }
 
 void AudioRendererHost::OnCreateStream(
     int stream_id, const media::AudioParameters& params) {
@@ skipping 92 matching lines @@
   if (!entry) {
     SendErrorMessage(stream_id);
     return;
   }
 
   entry->controller()->Pause();
   if (media_internals_)
     media_internals_->OnSetAudioStreamPlaying(this, stream_id, false);
 }
 
-void AudioRendererHost::OnFlushStream(int stream_id) {
-  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
-
-  AudioEntry* entry = LookupById(stream_id);
-  if (!entry) {
-    SendErrorMessage(stream_id);
-    return;
-  }
-
-  entry->controller()->Flush();
-  if (media_internals_)
-    media_internals_->OnSetAudioStreamStatus(this, stream_id, "flushed");
-}
-
 void AudioRendererHost::OnSetVolume(int stream_id, double volume) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
 
   AudioEntry* entry = LookupById(stream_id);
   if (!entry) {
     SendErrorMessage(stream_id);
     return;
   }
 
   // Make sure the volume is valid.
@@ skipping 68 matching lines @@
 }
 
 AudioRendererHost::AudioEntry* AudioRendererHost::LookupById(int stream_id) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
 
   AudioEntryMap::const_iterator i = audio_entries_.find(stream_id);
   return i != audio_entries_.end() ? i->second : NULL;
 }
 
 }  // namespace content