WebrtcAudioPrivateSetAudioExperimentsFunction dummy implementation

chrome/browser/extensions/api/webrtc_audio_private/webrtc_audio_private_api.cc

 // Copyright 2013 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 "chrome/browser/extensions/api/webrtc_audio_private/webrtc_audio_private_api.h"
 
 #include <memory>
 #include <utility>
 #include <vector>
 
@@ skipping 284 matching lines @@
   SendResponse(true);
 }
 
 WebrtcAudioPrivateSetAudioExperimentsFunction::
     WebrtcAudioPrivateSetAudioExperimentsFunction() {}
 
 WebrtcAudioPrivateSetAudioExperimentsFunction::
     ~WebrtcAudioPrivateSetAudioExperimentsFunction() {}
 
 bool WebrtcAudioPrivateSetAudioExperimentsFunction::RunAsync() {
+#if BUILDFLAG(ENABLE_WEBRTC)
   DCHECK_CURRENTLY_ON(BrowserThread::UI);
   std::unique_ptr<wap::SetAudioExperiments::Params> params(
       wap::SetAudioExperiments::Params::Create(*args_));
   EXTENSION_FUNCTION_VALIDATE(params.get());
 
   if (params->audio_experiments.enable_aec3.get()) {
     content::RenderProcessHost* host = GetRenderProcessHostFromRequest(
         params->request, params->security_origin);
     if (!host) {
       SendResponse(false);
       return false;
     }
 
     host->SetEchoCanceller3(*params->audio_experiments.enable_aec3);
   }
 
   SendResponse(true);
   return true;
+#else
+  SetError("Not supported");
+  SendResponse(false);
+  return false;
+#endif
 }
 
 }  // namespace extensions