Bug 64097 Loading icons always lookup the bundle
When UI and IDE are loading the icons, they are looking up the bundle for every icon they are trying to load. Looking up a bundle is not specially slow but is not the fastest operation either, therefore it could be great if you could lookup the bundle once and use it to load all the icons. Doing that will probably slightly improve the startup time.
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/internal/ide/IDEWorkbenchAdvisor.java
private static IDEWorkbenchAdvisor workbenchAdvisor = null;
	/**
	 * 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.
	 */
	private IDEWorkbenchActivityHelper activityHelper = null;
	
	/**