[MD History] Use openForeignSession message to open foreign session tabs.

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,
  *           separatorIndexes: !Array<number>,
  *           timestamp: number,
  *           tabs: !Array<!ForeignSessionTab>,
@@ skipping 41 matching lines @@
   },
 
   /**
    * @param {!ForeignSession} session
    * @return {!ForeignDeviceInternal}
    */
   createInternalDevice_: function(session) {
     var tabs = [];
     var separatorIndexes = [];
     for (var i = 0; i < session.windows.length; i++) {
+      var windowId = session.windows[i].sessionId;
       var newTabs = session.windows[i].tabs;
       if (newTabs.length == 0)
         continue;
 
+      newTabs.forEach(function(tab) {
+        tab.windowId = windowId;

[calamity, 2016/07/21 08:00:47]

I don't like adding data to the object here, but I'm not sure what other options
I have..

+      });
 
       if (!this.searchTerm) {
         // Add all the tabs if there is no search term.
         tabs = tabs.concat(newTabs);
         separatorIndexes.push(tabs.length - 1);
       } else {
         var searchText = this.searchTerm.toLowerCase();
         var windowAdded = false;
         for (var j = 0; j < newTabs.length; j++) {
           var tab = newTabs[j];
@@ skipping 102 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);
   }
 });