Bug 36486 call hierarchy: should use adapters
call hierarchy should use adapters to allow actions contributed on object to be added to the context menu
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/callhierarchy/CallHierarchyViewPart.java
ISelectionChangedListener {
    public static final String CALLERS_VIEW_ID = "org.eclipse.jdt.callhierarchy.view"; 
    private static final String DIALOGSTORE_VIEWORIENTATION = "CallHierarchyViewPart.orientation"; 
    private static final String DIALOGSTORE_CALL_MODE = "CallHierarchyViewPart.call_mode"; 
    private static final String DIALOGSTORE_JAVA_LABEL_FORMAT = "CallHierarchyViewPart.java_label_format"; 
    private static final String TAG_ORIENTATION = "orientation"; 
    private static final String TAG_CALL_MODE = "call_mode"; 
    private static final String TAG_JAVA_LABEL_FORMAT = "java_label_format"; 
    private static final String TAG_RATIO = "ratio"; 
    static final int VIEW_ORIENTATION_VERTICAL = 0;
    static final int VIEW_ORIENTATION_HORIZONTAL = 1;
    static final int VIEW_ORIENTATION_SINGLE = 2;
    static final int CALL_MODE_CALLERS = 0;
    static final int CALL_MODE_CALLEES = 1;
    static final int JAVA_LABEL_FORMAT_DEFAULT = JavaElementLabelProvider.SHOW_DEFAULT;
    static final int JAVA_LABEL_FORMAT_SHORT = JavaElementLabelProvider.SHOW_BASICS;
    static final int JAVA_LABEL_FORMAT_LONG = JavaElementLabelProvider.SHOW_OVERLAY_ICONS |
        JavaElementLabelProvider.SHOW_PARAMETERS |
        JavaElementLabelProvider.SHOW_RETURN_TYPE |