MD History: Update sign in state in data source

chrome/browser/resources/md_history/lazy_load.crisper.js

 Polymer({
   is: 'iron-collapse',
   behaviors: [ Polymer.IronResizableBehavior ],
   properties: {
     horizontal: {
       type: Boolean,
       value: false,
       observer: '_horizontalChanged'
     },
     opened: {
@@ skipping 2112 matching lines @@
       type: Boolean,
       value: false
     },
     hasSeenForeignData_: Boolean
   },
   listeners: {
     'toggle-menu': 'onToggleMenu_',
     scroll: 'onListScroll_'
   },
   attached: function() {
-    chrome.send('otherDevicesInitialized');
     md_history.BrowserService.getInstance().recordHistogram(SYNCED_TABS_HISTOGRAM_NAME, SyncedTabsHistogram.INITIALIZED, SyncedTabsHistogram.LIMIT);
   },
   getContentScrollTarget: function() {
     return this;
   },
   createInternalDevice_: function(session) {
     var tabs = [];
     var separatorIndexes = [];
     for (var i = 0; i < session.windows.length; i++) {
       var windowId = session.windows[i].sessionId;
@@ skipping 1138 matching lines @@
     var cl = this.$.selectionBar.classList;
     if (cl.contains('expand')) {
       cl.remove('expand');
       cl.add('contract');
       this._positionBar(this._pos.width, this._pos.left);
     } else if (cl.contains('contract')) {
       cl.remove('contract');
     }
   }
 });