MD WebUI: Move settings' dialog-drawer element into a shared cr-element

chrome/test/data/webui/cr_elements/cr_elements_browsertest.js

Index: chrome/test/data/webui/cr_elements/cr_elements_browsertest.js
diff --git a/chrome/test/data/webui/cr_elements/cr_elements_browsertest.js b/chrome/test/data/webui/cr_elements/cr_elements_browsertest.js
index 6a830706d30cb3993abe522b7306f7305fe86a40..31e9fa77d7e17c33ec732dac9316d7182a4fe089 100644
--- a/chrome/test/data/webui/cr_elements/cr_elements_browsertest.js
+++ b/chrome/test/data/webui/cr_elements/cr_elements_browsertest.js
@@ -133,3 +133,20 @@ CrElementsActionMenuTest.prototype = {
 TEST_F('CrElementsActionMenuTest', 'All', function() {
   mocha.run();
 });
+
+function CrElementsDrawerTest() {}
+
+CrElementsDrawerTest.prototype = {
+  __proto__: CrElementsBrowserTest.prototype,
+
+  /** @override */
+  browsePreload: 'chrome://resources/cr_elements/cr_drawer/cr_drawer.html',
+
+  /** @override */
+  extraLibraries: CrElementsBrowserTest.prototype.extraLibraries.concat(
+      ['cr_drawer_tests.js', ROOT_PATH + 'ui/webui/resources/js/util.js']),
+};
+
+TEST_F('CrElementsDrawerTest', 'All', function() {
+  mocha.run();
+});