Bug 89971 [Viewers] Viewers that use IViewerLabelProvider do too many instanceof checks
M6 Checking our viewer the calls to buildLabel are doing too many instanceof checks. As a result certain viewers (such as the table viewer) are twice as slow as they were in 3.0 due to these checks. I have written some performance suites to test the Table, Tree, List and Combo viewers. Table and Tree have this issue.
bundles/org.eclipse.jface/src/org/eclipse/jface/viewers/TableViewer.java
colorAndFontCollector.applyFontsAndColors(ti);
		}
	}
	/**
	 * Starts editing the given element.
	 * 
	 * @param element
	 *            the element
	 * @param column
	 *            the column number
	 */
	public void editElement(Object element, int column) {
		tableViewerImpl.editElement(element, column);
	}
	/**
	 * Returns the cell editors of this table viewer.
	 * 
	 * @return the list of cell editors
	 */
	public CellEditor[] getCellEditors() {
		return tableViewerImpl.getCellEditors();
	}
	/**
	 * Returns the cell modifier of this table viewer.
	 * 
	 * @return the cell modifier
	 */
	public ICellModifier getCellModifier() {
		return tableViewerImpl.getCellModifier();