cros: Remove system-level policy for audio capture allowed

extensions/shell/browser/shell_prefs.cc

 // Copyright 2014 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/shell/browser/shell_prefs.h"
 
 #include "base/prefs/json_pref_store.h"
 #include "base/prefs/pref_filter.h"
 #include "base/prefs/pref_registry_simple.h"
 #include "base/prefs/pref_service.h"
 #include "base/prefs/pref_service_factory.h"
 #include "components/pref_registry/pref_registry_syncable.h"
 #include "components/user_prefs/user_prefs.h"
 #include "content/public/browser/browser_context.h"
 #include "content/public/browser/browser_thread.h"
 #include "extensions/browser/extension_prefs.h"
 
 #if defined(OS_CHROMEOS)
 #include "chromeos/audio/audio_devices_pref_handler_impl.h"
 #endif
 
 using base::FilePath;
 using user_prefs::PrefRegistrySyncable;
 
 namespace extensions {
 namespace {
 
 void RegisterLocalStatePrefs(PrefRegistrySimple* registry) {
 #if defined(OS_CHROMEOS)
-  chromeos::AudioDevicesPrefHandlerImpl::RegisterPrefs(registry, "");
+  chromeos::AudioDevicesPrefHandlerImpl::RegisterPrefs(registry);
 #endif
 }
 
 // Creates a JsonPrefStore from a file at |filepath| and synchronously loads
 // the preferences.
 scoped_refptr<JsonPrefStore> CreateAndLoadPrefStore(const FilePath& filepath) {
   scoped_refptr<base::SequencedTaskRunner> task_runner =
       JsonPrefStore::GetTaskRunnerForFile(
           filepath, content::BrowserThread::GetBlockingPool());
   scoped_refptr<JsonPrefStore> pref_store =
@@ skipping 40 matching lines @@
   ExtensionPrefs::RegisterProfilePrefs(pref_registry);
 
   scoped_ptr<PrefService> pref_service = factory.Create(pref_registry);
   user_prefs::UserPrefs::Set(browser_context, pref_service.get());
   return pref_service;
 }
 
 }  // namespace shell_prefs
 
 }  // namespace extensions