Update MidiDispatcher to use Mojo Permission Service.

content/browser/media/midi_dispatcher_host.h

Index: content/browser/media/midi_dispatcher_host.h
diff --git a/content/browser/media/midi_dispatcher_host.h b/content/browser/media/midi_dispatcher_host.h
deleted file mode 100644
index a487178851d8a902b7bbece81c5feda1476f6328..0000000000000000000000000000000000000000
--- a/content/browser/media/midi_dispatcher_host.h
+++ /dev/null
@@ -1,64 +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 CONTENT_BROWSER_MEDIA_MIDI_DISPATCHER_HOST_H_
-#define CONTENT_BROWSER_MEDIA_MIDI_DISPATCHER_HOST_H_
-
-#include <vector>
-
-#include "base/callback_forward.h"
-#include "base/memory/weak_ptr.h"
-#include "content/public/browser/web_contents_observer.h"
-
-namespace content {
-
-class BrowserContext;
-
-// MidiDispatcherHost handles permissions for using system exclusive messages.
-class MidiDispatcherHost : public WebContentsObserver {
- public:
-  explicit MidiDispatcherHost(WebContents* web_contents);
-  ~MidiDispatcherHost() override;
-
-  // WebContentsObserver implementation.
-  void RenderFrameDeleted(RenderFrameHost* render_frame_host) override;
-  void DidNavigateAnyFrame(RenderFrameHost* render_frame_host,
-                           const LoadCommittedDetails& details,
-                           const FrameNavigateParams& params) override;
-  bool OnMessageReceived(const IPC::Message& message,
-                         RenderFrameHost* render_frame_host) override;
-
- private:
-  void OnRequestSysExPermission(RenderFrameHost* render_frame_host,
-                                int bridge_id,
-                                const GURL& origin,
-                                bool user_gesture);
-  void OnCancelSysExPermissionRequest(RenderFrameHost* render_frame_host,
-                                      int bridge_id,
-                                      const GURL& requesting_frame);
-  void WasSysExPermissionGranted(int render_process_id,
-                                 int render_frame_id,
-                                 int bridge_id,
-                                 bool is_allowed);
-  void CancelPermissionRequestsForFrame(RenderFrameHost* render_frame_host);
-
-  struct PendingPermission {
-    PendingPermission(int render_process_id,
-                      int render_frame_id,
-                      int bridge_id);
-    ~PendingPermission();
-    int render_process_id;
-    int render_frame_id;
-    int bridge_id;
-  };
-  std::vector<PendingPermission> pending_permissions_;
-
-  base::WeakPtrFactory<MidiDispatcherHost> weak_factory_;
-
-  DISALLOW_COPY_AND_ASSIGN(MidiDispatcherHost);
-};
-
-}  // namespace content
-
-#endif  // CONTENT_BROWSER_MEDIA_MIDI_DISPATCHER_HOST_H_