[MD History] Make first URL on Synced Device page instead of menu button.

chrome/browser/resources/md_history/synced_device_manager.js

 // Copyright 2016 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 /**
  * @typedef {{device: string,
  *           lastUpdateTime: string,
  *           opened: boolean,
  *           separatorIndexes: !Array<number>,
  *           timestamp: number,
@@ skipping 172 matching lines @@
       Polymer.dom(this.root)
           .querySelectorAll('history-synced-device-card')
           .reduce(
               function(prev, cur) {
                 return prev.concat(cur.createFocusRows());
               },
               [])
           .forEach(function(row) {
             this.focusGrid_.addRow(row);
           }.bind(this));
-      this.focusGrid_.ensureRowActive();
+      this.focusGrid_.ensureRowActive(1);
     });
   },
 
   /** @private */
   onDeleteSessionTap_: function() {
     var menu = assert(this.$.menu.getIfExists());
     var browserService = md_history.BrowserService.getInstance();
     browserService.recordHistogram(
         SYNCED_TABS_HISTOGRAM_NAME, SyncedTabsHistogram.HIDE_FOR_NOW,
         SyncedTabsHistogram.LIMIT);
@@ skipping 98 matching lines @@
     // User signed in, show the loading message when querying for synced
     // devices.
     this.fetchingSyncedTabs_ = true;
   },
 
   searchTermChanged: function(searchTerm) {
     this.clearDisplayedSyncedDevices_();
     this.updateSyncedDevices(this.sessionList);
   }
 });