Bug 139986 [CommonNavigator] Convert catch(Error/Throwable) to SafeRunner
In several places the CN framework uses catch(Error/Throwable) to ensure that code does not bring the framework down. Change these to use SafeRunner.
bundles/org.eclipse.ui.navigator/src/org/eclipse/ui/internal/navigator/extensions/SafeDelegateTreeContentProvider.java
}
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.ui.navigator.IPipelinedTreeContentProvider#getPipelinedParent(java.lang.Object,
	 *      java.lang.Object)
	 */
	public Object getPipelinedParent(Object anObject, Object aSuggestedParent) {
		if (contentProvider instanceof IPipelinedTreeContentProvider) {
			return ((IPipelinedTreeContentProvider) contentProvider)
					.getPipelinedParent(anObject, aSuggestedParent);
		}
		return anObject;
	}
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.ui.navigator.IPipelinedTreeContentProvider#interceptAdd(org.eclipse.ui.navigator.PipelinedShapeModification)
	 */
	public PipelinedShapeModification interceptAdd(
			PipelinedShapeModification anAddModification) { 
		if (contentProvider instanceof IPipelinedTreeContentProvider) {
			return ((IPipelinedTreeContentProvider) contentProvider)
					.interceptAdd(anAddModification);
		}
		return anAddModification;
	}
	/*
	 * (non-Javadoc)
	 *