Implement midi permissions on top of the new common permission classes

chrome/browser/content_settings/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_
+#ifndef CHROME_BROWSER_CONTENT_SETTINGS_PERMISSION_INFOBAR_DELEGATE_H_
+#define CHROME_BROWSER_CONTENT_SETTINGS_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
+// Base class for permission infobars, it implements the default behavior
 // 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);
+                            const GURL& requesting_origin);
+  virtual ~PermissionInfobarDelegate();
 
   // ConfirmInfoBarDelegate:
+  virtual base::string16 GetMessageText() const = 0;
+
   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_;
+  GURL requesting_origin_;
 
   DISALLOW_COPY_AND_ASSIGN(PermissionInfobarDelegate);
 };
 
-}  // namespace gcm
-#endif  // CHROME_BROWSER_SERVICES_GCM_PERMISSION_INFOBAR_DELEGATE_H_
+#endif  // CHROME_BROWSER_CONTENT_SETTINGS_PERMISSION_INFOBAR_DELEGATE_H_