Bug 65444 [R21PRES] Close button shown when views not closeable
RC1 build - run the browser example using the R2.1 presentation - the views have close buttons in the titlebar, but should not because the perspective has fixed="true" (meaning that all initial views are non-moveable and non-closeable)
bundles/org.eclipse.ui.presentations.r21/src/org/eclipse/ui/internal/presentations/r21/widgets/R21PaneFolder.java
* @return
	 */
	public Rectangle computeTrim(int i, int j, int k, int l) {
		return tabFolder.computeTrim(i, j, k, l);
	}
	/**
	 * @param fgColor
	 */
	public void setSelectionForeground(Color fgColor) {
		tabFolder.setSelectionForeground(fgColor);
	}
	/**
	 * @param bgColors
	 * @param percentages
	 * @param vertical
	 */
	public void setSelectionBackground(Color[] bgColors, int[] percentages, boolean vertical) {
		tabFolder.setSelectionBackground(bgColors, percentages);
	}
	
	public CTabItem getItem(int idx) {
		return tabFolder.getItem(idx);
	}
	public int getSelectionIndex() {
		return tabFolder.getSelectionIndex();
	}
	
	public int getTabHeight() {
		return tabFolder.getTabHeight();
	}