Remove PermissionContext factories

chrome/browser/media/midi_permission_context_factory.h

Index: chrome/browser/media/midi_permission_context_factory.h
diff --git a/chrome/browser/media/midi_permission_context_factory.h b/chrome/browser/media/midi_permission_context_factory.h
deleted file mode 100644
index 840756405616a22cefc636678eee3a194385cdc2..0000000000000000000000000000000000000000
--- a/chrome/browser/media/midi_permission_context_factory.h
+++ /dev/null
@@ -1,34 +0,0 @@
-// 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.
-
-#ifndef CHROME_BROWSER_MEDIA_MIDI_PERMISSION_CONTEXT_FACTORY_H_
-#define CHROME_BROWSER_MEDIA_MIDI_PERMISSION_CONTEXT_FACTORY_H_
-
-#include "base/macros.h"
-#include "base/memory/singleton.h"
-#include "chrome/browser/permissions/permission_context_factory_base.h"
-
-class MidiPermissionContext;
-class Profile;
-
-class MidiPermissionContextFactory
-    : public PermissionContextFactoryBase {
- public:
-  static MidiPermissionContext* GetForProfile(Profile* profile);
-  static MidiPermissionContextFactory* GetInstance();
-
- private:
-  friend struct base::DefaultSingletonTraits<MidiPermissionContextFactory>;
-
-  MidiPermissionContextFactory();
-  ~MidiPermissionContextFactory() override;
-
-  // BrowserContextKeyedBaseFactory methods:
-  KeyedService* BuildServiceInstanceFor(
-      content::BrowserContext* profile) const override;
-
-  DISALLOW_COPY_AND_ASSIGN(MidiPermissionContextFactory);
-};
-
-#endif  // CHROME_BROWSER_MEDIA_MIDI_PERMISSION_CONTEXT_FACTORY_H_