[MD History] Close delete items dialog when a new query is initiated.

chrome/browser/resources/md_history/list_container.js

Index: chrome/browser/resources/md_history/list_container.js
diff --git a/chrome/browser/resources/md_history/list_container.js b/chrome/browser/resources/md_history/list_container.js
index 93d430d098c6298aea140073b56f7115f9d31d2b..687a4fe7140c8c1a54723612178d2b851ec962d6 100644
--- a/chrome/browser/resources/md_history/list_container.js
+++ b/chrome/browser/resources/md_history/list_container.js
@@ -66,10 +66,13 @@ Polymer({
       return;
     }
 
+    // Close any open dialog if a new query is initiated.
+    if (!incremental && this.$.dialog.open)
+      this.$.dialog.close();
+
     this.set('queryState.querying', true);
     this.set('queryState.incremental', incremental);
 
-
     var lastVisitTime = 0;
     if (incremental) {
       var lastVisit = this.queryResult.results.slice(-1)[0];
@@ -114,7 +117,6 @@ Polymer({
   /** @private */
   loadMoreHistory_: function() { this.queryHistory(true); },
 
-
   /**
    * @param {HistoryQuery} info
    * @param {!Array<HistoryEntry>} results