[MD History] Add history-list-container between app and history lists.

chrome/browser/resources/md_history/constants.js

Index: chrome/browser/resources/md_history/constants.js
diff --git a/chrome/browser/resources/md_history/constants.js b/chrome/browser/resources/md_history/constants.js
index 4dd681041832f0e18a5788759cc0811a0fcb43cf..f2d7f957040cf726837b8953c961d2e01e8ad5fd 100644
--- a/chrome/browser/resources/md_history/constants.js
+++ b/chrome/browser/resources/md_history/constants.js
@@ -20,3 +20,13 @@ var HistoryRange = {
   WEEK: 1,
   MONTH: 2
 };
+
+// Types:
+/**
+ * @typedef {{groupedOffset: number,
+ *            incremental: boolean,
+ *            querying: boolean,
+ *            range: HistoryRange,
+ *            searchTerm: string}}
+ */
+var QueryState;