Implement midi permissions on top of the new common permission classes

chrome/browser/services/gcm/permission_infobar_delegate.h

-// 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.
-
-#ifndef CHROME_BROWSER_SERVICES_GCM_PERMISSION_INFOBAR_DELEGATE_H_
-#define CHROME_BROWSER_SERVICES_GCM_PERMISSION_INFOBAR_DELEGATE_H_
-
-#include "chrome/browser/content_settings/permission_request_id.h"
-#include "chrome/browser/infobars/infobar_service.h"
-#include "components/infobars/core/confirm_infobar_delegate.h"
-#include "content/public/browser/web_contents.h"
-
-class NavigationDetails;
-class PermissionQueueController;
-
-namespace gcm {
-
-// Base class for permission infobars, it implements the default behaviour
-// so that the accept/deny buttons grant/deny the relevant permission.
-// A basic implementor only needs to implement the methods that
-// provide an icon and a message text to the infobar.
-class PermissionInfobarDelegate : public ConfirmInfoBarDelegate {
- public:
-  virtual ~PermissionInfobarDelegate();
-
- protected:
-  PermissionInfobarDelegate(PermissionQueueController* controller,
-                            const PermissionRequestID& id,
-                            const GURL& requesting_frame);
-
-  // ConfirmInfoBarDelegate:
-  virtual void InfoBarDismissed() OVERRIDE;
-  virtual infobars::InfoBarDelegate::Type GetInfoBarType() const OVERRIDE;
-  virtual base::string16 GetButtonLabel(InfoBarButton button) const OVERRIDE;
-  virtual bool Accept() OVERRIDE;
-  virtual bool Cancel() OVERRIDE;
-
- private:
-  void SetPermission(bool update_content_setting, bool allowed);
-
-  PermissionQueueController* controller_; // not owned by us
-  const PermissionRequestID id_;
-  GURL requesting_frame_;
-
-  DISALLOW_COPY_AND_ASSIGN(PermissionInfobarDelegate);
-};
-
-}  // namespace gcm
-#endif  // CHROME_BROWSER_SERVICES_GCM_PERMISSION_INFOBAR_DELEGATE_H_