Reversed order of incoming nav events

Summary: Since events will be displayed in a timeline view with a flex-cloumn, it is more efficient to have the events be added to the event array in reverse order; that is the newest events at the front of the array.

Reviewed By: passy

Differential Revision: D16379893

fbshipit-source-id: c85a2cca118e2d4ae990f69134f5d5770c360fbd

src/plugins/navigation/__tests__/testNavigationPlugin.node.js

@@ -74,11 +74,11 @@ test('add incoming nav event to persisted state with nav events', () => {
       INCOMING_NAV_EVENT,
     );
     expect(newPersistedState.navigationEvents).toEqual([
-      ...persistedState.navigationEvents,
       {
         uri: 'mock://this_is_a_mock_uri/mock',
         date: DATE_MOCK_1,
       },
+      ...persistedState.navigationEvents,
     ]);
   } else {
     expect(reducer).not.toBeNull();