MD History: Add icon in top right of page when showing synced results

chrome/browser/resources/md_history/app.js

Index: chrome/browser/resources/md_history/app.js
diff --git a/chrome/browser/resources/md_history/app.js b/chrome/browser/resources/md_history/app.js
index c1de3c39eac53155f0d199d85059a5de812f9b0e..13f5e88e674e85131e8572c0e3b5bc3939e0f6f0 100644
--- a/chrome/browser/resources/md_history/app.js
+++ b/chrome/browser/resources/md_history/app.js
@@ -8,8 +8,11 @@ Polymer({
   behaviors: [Polymer.IronScrollTargetBehavior],
 
   properties: {
+    // Used to display notices for profile sign-in status.
     showSidebarFooter: Boolean,
 
+    hasSyncedResults: Boolean,
+
     // The id of the currently selected page.
     selectedPage_: {type: String, observer: 'unselectAll'},
 
@@ -293,6 +296,16 @@ Polymer({
   },
 
   /**
+   * @param {boolean} hasSyncedResults
+   * @param {string} selectedPage
+   * @return {boolean} Whether the (i) synced results notice should be shown.
+   * @private
+   */
+  showSyncNotice_: function(hasSyncedResults, selectedPage) {
+    return hasSyncedResults && selectedPage != 'syncedTabs';
+  },
+
+  /**
    * @param {string} page
    * @private
    */