Bug 137315 [Dialogs] Doubleclickable area to restore dialog size is often very small
bundles/org.eclipse.jface/src/org/eclipse/jface/dialogs/Dialog.java
if ((getDialogBoundsStrategy() & DIALOG_PERSISTSIZE)!= 0) {
			IDialogSettings settings = getDialogBoundsSettings();
			if (settings != null) {
				try {
					
					int width = settings.getInt(DIALOG_WIDTH);
					if (width != DIALOG_DEFAULT_BOUNDS) {
						result.x = width;
					}
					int height = settings.getInt(DIALOG_HEIGHT);
					if (height != DIALOG_DEFAULT_BOUNDS) {
						result.y = height;
					}
	
				} catch (NumberFormatException e) {
				}
			}
		}
		
		
		return result;
	}
	/**
	 * Returns the initial location to use for the shell. Overridden
	 * to check whether the bounds of the dialog have been stored in
	 * dialog settings.  If a location has been stored, it is returned.
	 * 
	 * @param initialSize