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

content/browser/renderer_host/render_view_host_impl.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/render_view_host_impl.h"
 
 #include <set>
 #include <string>
 #include <utility>
 #include <vector>
@@ skipping 1342 matching lines @@
   // This is defensive code to avoid infinite loops due to code run inside
   // UpdateWebkitPreferences() accidentally updating more preferences and thus
   // calling back into this code. See crbug.com/398751 for one past example.
   if (updating_web_preferences_)
     return;
   updating_web_preferences_ = true;
   UpdateWebkitPreferences(delegate_->ComputeWebkitPrefs());
   updating_web_preferences_ = false;
 }
 
-void RenderViewHostImpl::GetAudioOutputControllers(
-    const GetAudioOutputControllersCallback& callback) const {
-  scoped_refptr<AudioRendererHost> audio_host =
-      static_cast<RenderProcessHostImpl*>(GetProcess())->audio_renderer_host();
-  audio_host->GetOutputControllers(GetRoutingID(), callback);
-}
-
 void RenderViewHostImpl::ClearFocusedElement() {
   is_focused_element_editable_ = false;
   Send(new ViewMsg_ClearFocusedElement(GetRoutingID()));
 }
 
 bool RenderViewHostImpl::IsFocusedElementEditable() {
   return is_focused_element_editable_;
 }
 
 void RenderViewHostImpl::Zoom(PageZoom zoom) {
@@ skipping 99 matching lines @@
   FrameTree* frame_tree = delegate_->GetFrameTree();
 
   frame_tree->ResetForMainFrameSwap();
 }
 
 void RenderViewHostImpl::SelectWordAroundCaret() {
   Send(new ViewMsg_SelectWordAroundCaret(GetRoutingID()));
 }
 
 }  // namespace content