[Extensions] Convert some SyncExtensionFunctions

extensions/browser/api/audio/audio_api.cc

 // Copyright (c) 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 "extensions/browser/api/audio/audio_api.h"
 
 #include <utility>
 
 #include "base/lazy_instance.h"
 #include "base/values.h"
@@ skipping 64 matching lines @@
         audio::OnDevicesChanged::Create(devices);
     std::unique_ptr<Event> event(new Event(events::AUDIO_ON_DEVICES_CHANGED,
                                            audio::OnDevicesChanged::kEventName,
                                            std::move(args)));
     EventRouter::Get(browser_context_)->BroadcastEvent(std::move(event));
   }
 }
 
 ///////////////////////////////////////////////////////////////////////////////
 
-bool AudioGetInfoFunction::RunSync() {
+ExtensionFunction::ResponseAction AudioGetInfoFunction::Run() {
   AudioService* service =
       AudioAPI::GetFactoryInstance()->Get(browser_context())->GetService();
   DCHECK(service);
   OutputInfo output_info;
   InputInfo input_info;
   if (!service->GetInfo(&output_info, &input_info)) {
-    SetError("Error occurred when querying audio device information.");
-    return false;
+    return RespondNow(
+        Error("Error occurred when querying audio device information."));
   }
 
-  results_ = audio::GetInfo::Results::Create(output_info, input_info);
-  return true;
+  return RespondNow(
+      ArgumentList(audio::GetInfo::Results::Create(output_info, input_info)));
 }
 
 ///////////////////////////////////////////////////////////////////////////////
 
-bool AudioSetActiveDevicesFunction::RunSync() {
+ExtensionFunction::ResponseAction AudioSetActiveDevicesFunction::Run() {
   std::unique_ptr<audio::SetActiveDevices::Params> params(
       audio::SetActiveDevices::Params::Create(*args_));
   EXTENSION_FUNCTION_VALIDATE(params.get());
 
   AudioService* service =
       AudioAPI::GetFactoryInstance()->Get(browser_context())->GetService();
   DCHECK(service);
 
   service->SetActiveDevices(params->ids);
-  return true;
+  return RespondNow(NoArguments());
 }
 
 ///////////////////////////////////////////////////////////////////////////////
 
-bool AudioSetPropertiesFunction::RunSync() {
+ExtensionFunction::ResponseAction AudioSetPropertiesFunction::Run() {
   std::unique_ptr<audio::SetProperties::Params> params(
       audio::SetProperties::Params::Create(*args_));
   EXTENSION_FUNCTION_VALIDATE(params.get());
 
   AudioService* service =
       AudioAPI::GetFactoryInstance()->Get(browser_context())->GetService();
   DCHECK(service);
 
   int volume_value = params->properties.volume.get() ?
       *params->properties.volume : -1;
 
   int gain_value = params->properties.gain.get() ?
       *params->properties.gain : -1;
 
-  if (!service->SetDeviceProperties(params->id,
-                                    params->properties.is_muted,
-                                    volume_value,
-                                    gain_value))
-    return false;
-  else
-    return true;
+  if (!service->SetDeviceProperties(params->id, params->properties.is_muted,
+                                    volume_value, gain_value)) {
+    return RespondNow(Error("Could not set properties"));
+  }
+  return RespondNow(NoArguments());
 }
 
 ///////////////////////////////////////////////////////////////////////////////
 
 }  // namespace extensions