Implement feature policy checks in the browser process

chrome/browser/media/midi_permission_context.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/media/midi_permission_context.h"
 
 MidiPermissionContext::MidiPermissionContext(Profile* profile)
-    : PermissionContextBase(profile, CONTENT_SETTINGS_TYPE_MIDI) {}
+    : PermissionContextBase(profile,
+                            CONTENT_SETTINGS_TYPE_MIDI,
+                            blink::WebFeaturePolicyFeature::kMidiFeature) {}
 
 MidiPermissionContext::~MidiPermissionContext() {
 }
 
 ContentSetting MidiPermissionContext::GetPermissionStatusInternal(
     content::RenderFrameHost* render_frame_host,
     const GURL& requesting_origin,
     const GURL& embedding_origin) const {
   return CONTENT_SETTING_ALLOW;
 }
 
 bool MidiPermissionContext::IsRestrictedToSecureOrigins() const {
   return true;
 }