Bug 62896 [misc] Quick Outline should not show override indicators if decorator disabled
I20040519 The quick outline shows override indicators no matter whether the Override indicator decorator is enabled in the prefs or not. We should only install the decorator if the prefs says so since this is a performance saver.
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/text/JavaOutlineInformationControl.java
}
	/**
	 * {@inheritDoc}
	 */
	protected TreeViewer createTreeViewer(Composite parent, int style) {
		Tree tree= new Tree(parent, SWT.SINGLE | (style & ~SWT.MULTI));
		tree.setLayoutData(new GridData(GridData.FILL_BOTH));
	
		final TreeViewer treeViewer= new OutlineTreeViewer(tree);
	
		
		treeViewer.addFilter(new NamePatternFilter());
		treeViewer.addFilter(new MemberFilter());
		fForegroundColor= parent.getDisplay().getSystemColor(SWT.COLOR_DARK_GRAY);
		fInnerLabelProvider= new OutlineLabelProvider();
		fInnerLabelProvider.addLabelDecorator(new ProblemsLabelDecorator(null));
		fInnerLabelProvider.addLabelDecorator(new OverrideIndicatorLabelDecorator(null));
		treeViewer.setLabelProvider(fInnerLabelProvider);
		
		fLexicalSortingAction= new LexicalSortingAction(treeViewer);
		fSortByDefiningTypeAction= new SortByDefiningTypeAction(treeViewer);
		fShowOnlyMainTypeAction= new ShowOnlyMainTypeAction(treeViewer);
		
		fOutlineContentProvider= new OutlineContentProvider(false);
		treeViewer.setContentProvider(fOutlineContentProvider);
		fOutlineSorter= new OutlineSorter();
		treeViewer.setSorter(fOutlineSorter);
		treeViewer.setAutoExpandLevel(AbstractTreeViewer.ALL_LEVELS);