[Fixed Position] Add placeholder specs

Add placeholder specs for classes added to support
selection of elements in a fixed position view,
WTD-879.

platform/features/layout/test/elements/ElementProxySpec.js

@@ -0,0 +1,12 @@
+/*global define,describe,it,expect,beforeEach,jasmine*/
+
+define(
+    ['../../src/elements/ElementProxy'],
+    function (ElementProxy) {
+        "use strict";
+
+        describe("A fixed position element proxy", function () {
+
+        });
+    }
+);