Bug 214137 [Markers] Unbound system filters should be bound to problems view.
In 3.3 we supported systemFilters which are not currently picked up by the problems view. We should pick these up for compatiblity.
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/internal/views/markers/MarkerFieldFilterGroup.java
String className = null;
			if (element != null) {
				className = element.getAttribute(ATTRIBUTE_VALUES);
				if (className != null) {
					FiltersContributionParameters parameters = (FiltersContributionParameters) IDEWorkbenchPlugin
							.createExtension(element, ATTRIBUTE_VALUES);
					return parameters.getParameterValues();
				}
			}
		} catch (CoreException e) {
			MarkerSupportInternalUtilities.handle(e);
			return null;
		}
		return EMPTY_MAP;
	}
	/**
	 * Get the working set for the receiver.
	 * 
	 * @return IWorkingSet
	 */
	IWorkingSet getWorkingSet() {
		return workingSet;
	}
	/**
	 * Return all of the paths in the working set
	 * 
	 * @return Collection
	 */
	private Collection getWorkingSetPaths() {
		if (workingSetPaths == null) {