Bug 63267 [RCP] tab style for M9
the tab style in the IDE in M9 should use the curved style
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/internal/ide/IDEWorkbenchAdvisor.java
public void partOpened(IWorkbenchPartReference ref) {
			    
			}
			public void partHidden(IWorkbenchPartReference ref) {
			    
			}
			public void partVisible(IWorkbenchPartReference ref) {
			    
			}
			public void partInputChanged(IWorkbenchPartReference ref) {
			    
			}
		});
	}
	/* (non-Javadoc)
	 * @see org.eclipse.ui.application.WorkbenchAdvisor#postWindowRestore
	 */
	public void postWindowRestore(IWorkbenchWindowConfigurer windowConfigurer) throws WorkbenchException {
		int index = PlatformUI.getWorkbench().getWorkbenchWindowCount() - 1;
		
		if (index >=0 && welcomePerspectiveInfos != null && index < welcomePerspectiveInfos.size()) {
			
			IWorkbenchPage page = windowConfigurer.getWindow().getActivePage();
			if (page == null) {
				IWorkbenchPage pages[] = windowConfigurer.getWindow().getPages();
				if (pages != null && pages.length > 0)
					page = pages[0];
			}
			
			String perspectiveId = ((AboutInfo) welcomePerspectiveInfos.get(index)).getWelcomePerspectiveId();