Bug 508982 - Use Display#getDefault() instead of IWorkbench#getDisplay()

Change-Id: I5542330be824fdee9e50df07e86d99d42ae59c62
Signed-off-by: Mikael Barbero <mikael@eclipse.org>
diff --git a/bundles/org.eclipse.ui.workbench/Eclipse UI/org/eclipse/ui/internal/progress/ProgressManager.java b/bundles/org.eclipse.ui.workbench/Eclipse UI/org/eclipse/ui/internal/progress/ProgressManager.java
index 4ad2154..a00de14 100644
--- a/bundles/org.eclipse.ui.workbench/Eclipse UI/org/eclipse/ui/internal/progress/ProgressManager.java
+++ b/bundles/org.eclipse.ui.workbench/Eclipse UI/org/eclipse/ui/internal/progress/ProgressManager.java
@@ -342,7 +342,7 @@
 		Job.getJobManager().addJobChangeListener(this.changeListener);
 		StatusManager.getManager().addListener(notificationListener);
 
-		display = PlatformUI.getWorkbench().getDisplay();
+		display = Display.getDefault();
 
 		uiRefreshThrottler = new Throttler(display, Duration.ofMillis(100), () -> {
 			Set<JobInfo> localPendingJobUpdates;