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

content/browser/renderer_host/render_process_host_impl.h

 // 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.
 
 #ifndef CONTENT_BROWSER_RENDERER_HOST_RENDER_PROCESS_HOST_IMPL_H_
 #define CONTENT_BROWSER_RENDERER_HOST_RENDER_PROCESS_HOST_IMPL_H_
 
 #include <map>
 #include <queue>
 #include <string>
@@ skipping 252 matching lines @@
   // Called when the existence of the other renderer process which is connected
   // to the Worker in this renderer process has changed.
   // It is only called when "enable-embedded-shared-worker" flag is set.
   void IncrementWorkerRefCount();
   void DecrementWorkerRefCount();
 
   // Call this function to resume the navigation when it was deferred
   // immediately after receiving response headers.
   void ResumeResponseDeferredAtStart(const GlobalRequestID& request_id);
 
+  void GetAudioOutputControllers(
+      const GetAudioOutputControllersCallback& callback) const override;
+
  protected:
   // A proxy for our IPC::Channel that lives on the IO thread (see
   // browser_process.h)
   scoped_ptr<IPC::ChannelProxy> channel_;
 
   // A host object ChannelMojo needs. The lifetime is bound to
   // the RenderProcessHostImpl, not the channel.
   scoped_ptr<IPC::ChannelMojoHost> channel_mojo_host_;
 
   // True if fast shutdown has been performed on this RPH.
@@ skipping 215 matching lines @@
   bool subscribe_uniform_enabled_;
 
   base::WeakPtrFactory<RenderProcessHostImpl> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderProcessHostImpl);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_RENDERER_HOST_RENDER_PROCESS_HOST_IMPL_H_