Bug 21013 [PropertiesView] ComboBoxPropertyDescriptor should provide a defualt label provider
ComboBoxPropertyDescriptor requires an array of string values in its contructor. These are used to display in the combo box cell editor. Typically clients must also supply a label provider with the same array of values in order to show the correct value when the cell editor is not active. The descriptor should create a default label provider based on the values passed in its constructor.
bundles/org.eclipse.ui.views/src/org/eclipse/ui/views/properties/PropertyDescriptor.java
/**
 * The <code>SimplePropertyDescriptor</code> implementation of this 
 * <code>IPropertyDescriptor</code> method returns the value supplied
 * on the constructor.
 */
public String getDisplayName() {
	return display;
}
/**
 * The <code>SimplePropertyDescriptor</code> implementation of this 
 * <code>IPropertyDescriptor</code> method returns the value set by
 * the <code>setFilterFlags</code> method. If unset, this method returns
 * <code>null</code>.
 * <p>
 * Valid values for these flags are declared as constants on 
 *  <code>IPropertySheetEntry</code>
 */
public String[] getFilterFlags() {
	return filterFlags;
}
/**
 * The <code>SimplePropertyDescriptor</code> implementation of this 
 * <code>IPropertyDescriptor</code> method returns the value set by
 * the <code>setHelpContextId</code> method. If unset, this method returns
 * <code>null</code>.
 *
 * @see #setHelpContextIds
 */
public Object getHelpContextIds() {
	return helpIds;