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

chrome/browser/resources/history/other_devices.js

 // Copyright (c) 2013 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.
 
 /**
  * @fileoverview The section of the history page that shows tabs from sessions
                  on other devices.
  */
 
 ///////////////////////////////////////////////////////////////////////////////
@@ skipping 523 matching lines @@
       grid.addRow(new DevicesViewFocusRow(rows[j], devices[i]));
     }
     grid.ensureRowActive();
     this.focusGrids_.push(grid);
   }
 };
 
 /**
  * Sets the menu model data. An empty list means that either there are no
  * foreign sessions, or tab sync is disabled for this profile.
- * |isTabSyncEnabled| makes it possible to distinguish between the cases.
  *
  * @param {Array} sessionList Array of objects describing the sessions
  *     from other devices.
- * @param {boolean} isTabSyncEnabled Is tab sync enabled for this profile?
  */
-function setForeignSessions(sessionList, isTabSyncEnabled) {
-  // The other devices is shown iff tab sync is enabled.
-  if (isTabSyncEnabled)
-    devicesView.setSessionList(sessionList);
-  else
-    devicesView.clearDOM();
+function setForeignSessions(sessionList) {
+  devicesView.setSessionList(sessionList);
 }
 
 /**
  * Called when initialized or the user's signed in state changes,
  * @param {boolean} isUserSignedIn Is the user currently signed in?
  */
 function updateSignInState(isUserSignedIn) {
   if (devicesView)
     devicesView.updateSignInState(isUserSignedIn);
 }
@@ skipping 17 matching lines @@
     devicesView.setSearchText($('search-field').value);
   };
   $('search-field').addEventListener('search', doSearch);
   $('search-button').addEventListener('click', doSearch);
 
   chrome.send('otherDevicesInitialized');
 }
 
 // Add handlers to HTML elements.
 document.addEventListener('DOMContentLoaded', load);