Bug 55799 [Intro] When new welcome is available, don't show the old one
One of the M8 candidate builds (any): 1) Open Eclipse on a new workspace 2) Close the new Welcome when it opens 3) Close Eclipse 4) Open Eclipse again. Observe: the old Welcome editor is opened. Expectation: when a product has a valid Intro, old welcome should never be shown.
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/internal/ide/WorkbenchActionBuilder.java
workbenchContextSupport.getCompoundContextActivationService().addContextActivationService(contextActivationServiceA);
			}
		});
		menu.add(new Action("Remove context A from the workbench") {
			public void run() {
				IWorkbench workbench = PlatformUI.getWorkbench();
				IWorkbenchContextSupport workbenchContextSupport = (IWorkbenchContextSupport) workbench.getContextSupport();
				workbenchContextSupport.getCompoundContextActivationService().removeContextActivationService(contextActivationServiceA);
			}
		});
		
		menu.add(new Action("Add context B to the workbench") {
			public void run() {
				IWorkbench workbench = PlatformUI.getWorkbench();
				IWorkbenchContextSupport workbenchContextSupport = (IWorkbenchContextSupport) workbench.getContextSupport();
				workbenchContextSupport.getCompoundContextActivationService().addContextActivationService(contextActivationServiceB);
			}
		});
		menu.add(new Action("Remove context B from the workbench") {
			public void run() {
				IWorkbench workbench = PlatformUI.getWorkbench();
				IWorkbenchContextSupport workbenchContextSupport = (IWorkbenchContextSupport) workbench.getContextSupport();
				workbenchContextSupport.getCompoundContextActivationService().removeContextActivationService(contextActivationServiceB);
			}
		});
		
		menu.add(new Separator());
		
		menu.add(new Action("Add context A to the workbench page") {
			public void run() {