ImageViewer: Convert to Tr::tr

Change-Id: Id12dc265ed60be942ec68ac5a80f57144c2d086f
Reviewed-by: Eike Ziller <eike.ziller@qt.io>

src/plugins/imageviewer/imageviewer.h

@@ -27,16 +27,9 @@
 #pragma once
 
 #include <coreplugin/editormanager/ieditor.h>
+#include <coreplugin/editormanager/ieditorfactory.h>
 #include <coreplugin/idocument.h>
 
-#include <QScopedPointer>
-#include <QStringList>
-
-QT_BEGIN_NAMESPACE
-class QAbstractButton;
-class QAction;
-QT_END_NAMESPACE
-
 namespace ImageViewer::Internal {
 
 class ImageViewerFile;
@@ -78,4 +71,10 @@ private:
     struct ImageViewerPrivate *d;
 };
 
+class ImageViewerFactory final : public Core::IEditorFactory
+{
+public:
+    ImageViewerFactory();
+};
+
 } // ImageViewer::Internal