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diff --git a/uriloader/exthandler/uikit/nsOSHelperAppService.h b/uriloader/exthandler/uikit/nsOSHelperAppService.h
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+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
+ * vim:expandtab:shiftwidth=2:tabstop=2:cin:
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef nsOSHelperAppService_h__
+#define nsOSHelperAppService_h__
+
+// The OS helper app service is a subclass of nsExternalHelperAppService and
+// is implemented on each platform. It contains platform specific code for
+// finding helper applications for a given mime type in addition to launching
+// those applications. This is the UIKit version.
+
+#include "nsExternalHelperAppService.h"
+#include "nsCExternalHandlerService.h"
+#include "nsCOMPtr.h"
+
+class nsOSHelperAppService final : public nsExternalHelperAppService
+{
+public:
+ nsOSHelperAppService();
+ ~nsOSHelperAppService();
+
+ // override nsIExternalProtocolService methods
+ NS_IMETHOD GetApplicationDescription(const nsACString& aScheme,
+ nsAString& _retval);
+
+ // method overrides --> used to hook the mime service into internet config....
+ NS_IMETHOD GetFromTypeAndExtension(const nsACString& aType,
+ const nsACString& aFileExt,
+ nsIMIMEInfo** aMIMEInfo);
+ already_AddRefed<nsIMIMEInfo> GetMIMEInfoFromOS(const nsACString& aMIMEType,
+ const nsACString& aFileExt,
+ bool* aFound);
+ NS_IMETHOD GetProtocolHandlerInfoFromOS(const nsACString& aScheme,
+ bool* found,
+ nsIHandlerInfo** _retval);
+
+ // GetFileTokenForPath must be implemented by each platform.
+ // platformAppPath --> a platform specific path to an application that we got
+ // out of the rdf data source. This can be a mac file
+ // spec, a unix path or a windows path depending on the
+ // platform
+ // aFile --> an nsIFile representation of that platform application path.
+ virtual nsresult GetFileTokenForPath(const char16_t* platformAppPath,
+ nsIFile** aFile);
+
+ nsresult OSProtocolHandlerExists(const char* aScheme, bool* aHandlerExists);
+};
+
+#endif // nsOSHelperAppService_h__