[Sync] Removing complexity around PROXY_TABS now that empty sessions are provided when disabled.

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 7f36d58d6d4bebdbe35d70c9d20b998cd21dd404..ba2ebace6ad6989d1f5464c58b36bd96c6a33325 100644
--- a/chrome/browser/resources/md_history/app.js
+++ b/chrome/browser/resources/md_history/app.js
@@ -264,21 +264,8 @@ Polymer({
   /**
    * @param {!Array<!ForeignSession>} sessionList Array of objects describing
    *     the sessions from other devices.
-   * @param {boolean} isTabSyncEnabled Is tab sync enabled for this profile?
    */
-  setForeignSessions: function(sessionList, isTabSyncEnabled) {
-    if (!isTabSyncEnabled) {
-      var syncedDeviceManagerElem =
-      /** @type {HistorySyncedDeviceManagerElement} */this
-          .$$('history-synced-device-manager');
-      if (syncedDeviceManagerElem) {
-        md_history.ensureLazyLoaded().then(function() {
-          syncedDeviceManagerElem.tabSyncDisabled();

[calamity, 2016/11/24 00:29:09]

Delete this in synced_device_manager.js

[skym, 2016/11/29 18:30:55]

Done.

-        });
-      }
-      return;
-    }
-
+  setForeignSessions: function(sessionList) {
     this.set('queryResult_.sessionList', sessionList);
   },