[MD History] Implement grouped history UI.

chrome/test/data/webui/md_history/md_history_browsertest.js

Index: chrome/test/data/webui/md_history/md_history_browsertest.js
diff --git a/chrome/test/data/webui/md_history/md_history_browsertest.js b/chrome/test/data/webui/md_history/md_history_browsertest.js
index ab0de7507fcde041cf3d20fd5e64f3228e2d868b..6053c142ce708e594cf3bf086401b58b5f79b69e 100644
--- a/chrome/test/data/webui/md_history/md_history_browsertest.js
+++ b/chrome/test/data/webui/md_history/md_history_browsertest.js
@@ -29,6 +29,7 @@ MaterialHistoryBrowserTest.prototype = {
   extraLibraries: PolymerTest.getLibraries(ROOT_PATH).concat([
     'test_util.js',
     'browser_service_test.js',
+    'history_grouped_list_test.js',
     'history_item_test.js',
     'history_list_test.js',
     'history_overflow_menu_test.js',
@@ -53,6 +54,11 @@ TEST_F('MaterialHistoryBrowserTest', 'BrowserServiceTest', function() {
   mocha.run();
 });
 
+TEST_F('MaterialHistoryBrowserTest', 'HistoryGroupedListTest', function() {
+  md_history.history_grouped_list_test.registerTests();
+  mocha.run();
+});
+
 TEST_F('MaterialHistoryBrowserTest', 'HistoryItemTest', function() {
   md_history.history_item_test.registerTests();
   mocha.run();