Bug 110998 [Problems] Remove the working set selection and switch to using global working sets
M2 We need to remove the working sets option in the filter and switch to using the current list of working sets. We should move this to a preference that says only "Use Working Sets"
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/views/markers/internal/MarkerFilter.java
IResource[] getResourcesInWorkingSet() {
		if (workingSet == null) {
			return new IResource[0];
		}
		IAdaptable[] elements = workingSet.getElements();
		List result = new ArrayList(elements.length);
		for (int idx = 0; idx < elements.length; idx++) {
			IResource next = (IResource) elements[idx]
					.getAdapter(IResource.class);
			if (next != null) {
				result.add(next);
			}
		}
		return (IResource[]) result.toArray(new IResource[result.size()]);
	}
	/**
	 * Returns a set of strings representing the full pathnames to every
	 * resource directly or indirectly contained in the working set. A resource
	 * is in the working set iff its path name can be found in this set.
	 * 
	 * @return
	 */
	private Set getWorkingSetAsSetOfPaths() {
		if (cachedWorkingSet == null) {
			HashSet result = new HashSet();
			addResourcesAndChildren(result, getResourcesInWorkingSet());
			cachedWorkingSet = result;
		}
		return cachedWorkingSet;
	}