function addPreProcessFilter(filterFunc) {
			editor.on('BeforePastePreProcess', function(e) {
				e.content = filterFunc(e.content);
			});
		}
This class contains various fixes for browsers. These issues can not be feature
detected since we have no direct control over the clipboard. However we might be able
to remove some of these fixes once the browsers gets updated/fixed.

@class tinymce.pasteplugin.Quirks
@private