Fix webrtcAudioPrivate API to handle requests from <webview>s.

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/logging.h"
 #include "base/memory/shared_memory.h"
@@ skipping 128 matching lines @@
       num_playing_streams_(0) {
   DCHECK(audio_manager_);
   DCHECK(media_stream_manager_);
 }
 
 AudioRendererHost::~AudioRendererHost() {
   DCHECK(audio_entries_.empty());
 }
 
 void AudioRendererHost::GetOutputControllers(
-    int render_view_id,
-    const RenderViewHost::GetAudioOutputControllersCallback& callback) const {
+    const RenderProcessHost::GetAudioOutputControllersCallback& callback)
+    const {

[jam, 2015/01/29 00:19:04]

ditto

   BrowserThread::PostTaskAndReplyWithResult(
-      BrowserThread::IO,
-      FROM_HERE,
-      base::Bind(&AudioRendererHost::DoGetOutputControllers, this,
-                 render_view_id),
-      callback);
+      BrowserThread::IO, FROM_HERE,
+      base::Bind(&AudioRendererHost::DoGetOutputControllers, this), callback);
 }
 
 void AudioRendererHost::OnChannelClosing() {
   // Since the IPC sender is gone, close all requested audio streams.
   while (!audio_entries_.empty()) {
     // Note: OnCloseStream() removes the entries from audio_entries_.
     OnCloseStream(audio_entries_.begin()->first);
   }
 }
 
@@ skipping 107 matching lines @@
         entry->stream_id(),
         base::Bind(&media::AudioOutputController::ReadCurrentPowerAndClip,
                    entry->controller()));
   } else {
     AudioStreamMonitor::StopMonitoringStream(
         render_process_id_, entry->render_frame_id(), entry->stream_id());
   }
   UpdateNumPlayingStreams(entry, is_playing);
 }
 
-RenderViewHost::AudioOutputControllerList
-AudioRendererHost::DoGetOutputControllers(int render_view_id) const {
+RenderProcessHost::AudioOutputControllerList
+AudioRendererHost::DoGetOutputControllers() const {
   DCHECK_CURRENTLY_ON(BrowserThread::IO);
 
-  RenderViewHost::AudioOutputControllerList controllers;
+  RenderProcessHost::AudioOutputControllerList controllers;
   for (AudioEntryMap::const_iterator it = audio_entries_.begin();
        it != audio_entries_.end();
        ++it) {
-    AudioEntry* entry = it->second;
-    if (entry->render_view_id() == render_view_id)
-      controllers.push_back(entry->controller());
+    controllers.push_back(it->second->controller());
   }
 
   return controllers;
 }
 
 ///////////////////////////////////////////////////////////////////////////////
 // IPC Messages handler
 bool AudioRendererHost::OnMessageReceived(const IPC::Message& message) {
   bool handled = true;
   IPC_BEGIN_MESSAGE_MAP(AudioRendererHost, message)
@@ skipping 200 matching lines @@
        it != audio_entries_.end();
        ++it) {
     AudioEntry* entry = it->second;
     if (entry->render_view_id() == render_view_id && entry->playing())
       return true;
   }
   return false;
 }
 
 }  // namespace content