Bug 54915 [RCP] Need the ability to launch/load the Workbench without showing any windows
We need the ability to start up the Workbench without actually showing any WorkbenchWindows. The idea here is that is a significant gain in performance in doing this. WorkbenchWindows are created and brought to the front when requested by the user. With the Workbench running in the background the perceived load time experience should be much better than it is today. This is critical for LWP.
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/internal/ide/IDEWorkbenchAdvisor.java
private static IDEWorkbenchAdvisor workbenchAdvisor = null;
	/**
	 * Special object for configuring the workbench.
	 */
	private IWorkbenchConfigurer configurer;	
	/**
	 * Event loop exception handler for the advisor.
	 */
	private IDEExceptionHandler exceptionHandler = null;
	
	/**
	 * Contains the workspace location if the -showlocation command line
	 * argument is specified, or <code>null</code> if not specified.
	 */
	private String workspaceLocation = null;
	/**
	 * Ordered set of versioned feature ids new for this session; <code>null</code>
	 * if uninitialized. Element type: <code>String</code>
	 */
	private Set newlyAddedFeatures = null;
	
	/**
	 * List of <code>AboutInfo</code> for all new installed
	 * features that specify a welcome perspective.
	 */
	private ArrayList welcomePerspectiveInfos = null;
	
	/**
	 * Helper for managing activites in response to workspace changes.
	 */