Bug 180701 [JFace] API - Popup dialog is creating image descriptors every time it is opened
We are not caching the imageDescriptors from PopupDialog but are recreating them all of the time. This is likely not a serious issue but it will generate garbage. Also the images are not looked up using bundles so they cannot be overridden in other Locales. As they are currently symmetric this is not an issue but they should be looked up in the same way we do it in JFaceResources when this fixed.
bundles/org.eclipse.jface/src/org/eclipse/jface/dialogs/PopupDialog.java
protected boolean hasInfoArea() {
		return infoText != null;
	}
	/**
	 * Creates the title and menu area. Subclasses typically need not override
	 * this method, but instead should use the constructor parameters
	 * <code>showDialogMenu</code> and <code>showPersistAction</code> to
	 * indicate whether a menu should be shown, and
	 * <code>createTitleControl</code> to to customize the presentation of the
	 * title.
	 * 
	 * <p>
	 * If this method is overridden, the returned control's layout data must be
	 * an instance of <code>GridData</code>. This method must not modify the
	 * parent's layout.
	 * 
	 * @param parent
	 *            The parent composite.
	 * @return The Control representing the title and menu area.
	 */
	protected Control createTitleMenuArea(Composite parent) {
		Composite titleAreaComposite = new Composite(parent, SWT.NONE);
		POPUP_LAYOUT_FACTORY.copy().numColumns(2).applyTo(titleAreaComposite);
		GridDataFactory.fillDefaults()
			.align(SWT.FILL, SWT.CENTER).grab(true, false)
			.applyTo(titleAreaComposite);
		createTitleControl(titleAreaComposite);
		if (showDialogMenu) {
			createDialogMenu(titleAreaComposite);
		}