Bug 46351 Call Hierarchy must not implement IViewSite [call hierarchy]
I20031105 The call hierarchy component implements IViewSite which is not allowed. There seems to be no reason for doing so: the CallHierarchyViewPart should directly set the selection provider to its site.
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/callhierarchy/CallHierarchyViewAdapter.java
private IViewSite fSite;
    /**
     * Constructor for SearchViewAdapter.
     */
    public CallHierarchyViewAdapter(IViewSite site) {
        fSite= site;
    }
    /**
     * @see org.eclipse.ui.IWorkbenchPart#getSite()
     */
    public IWorkbenchPartSite getSite() {
        return fSite;
    }
    /*
     * @see org.eclipse.ui.IViewPart#getViewSite()
     */
    public IViewSite getViewSite() {
        return fSite;
    }
    
    /*
     * @see org.eclipse.ui.IViewPart#init(IViewSite)
     */
    public void init(IViewSite site) throws PartInitException {
    }
    /*