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/MarkerSupportRegistry.java
if (attribute.equals(MESSAGE))
			return new FieldMessage();
		if (attribute.equals(SEVERITY_HIERARCHY))
			return new FieldSeverity();
		if (attribute.equals(SUBCATEGORY))
			return new FieldSubCategory();
		if (attribute.equals(RESOURCE))
			return new FieldResource();
		return null;
	}
	/**
	 * Get the markerTypes defined in element.
	 * 
	 * @param element
	 * @return String[]
	 */
	private String[] getMarkerTypes(IConfigurationElement element) {
		IConfigurationElement[] types = element
				.getChildren(MARKER_TYPE_REFERENCE);
		String[] ids = new String[types.length];
		for (int i = 0; i < ids.length; i++) {
			ids[i] = types[i].getAttribute(ID);
		}
		return ids;
	}
	/**
	 * Create an ICategoryProvider from element.
	 * 
	 * @param element
	 * @return ICategoryProvider