[MD History] Make side bar always visible.

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 0d68ff73cf2a85e2e6e4b62ed74c743d8a9261c9..1a6c0916067ec17450e2facef02e6a5339588a1a 100644
--- a/chrome/browser/resources/md_history/app.js
+++ b/chrome/browser/resources/md_history/app.js
@@ -92,16 +92,14 @@ Polymer({
    * @param {boolean} isTabSyncEnabled Is tab sync enabled for this profile?
    */
   setForeignSessions: function(sessionList, isTabSyncEnabled) {
-    // TODO(calamity): Add a 'no synced devices' message when sessions are

[tsergeant, 2016/05/05 17:59:09]

This TODO is still relevant.

[calamity, 2016/05/05 18:49:33]

Reinstated.

-    // empty.
-    this.$['history-side-bar'].hidden = !isTabSyncEnabled;
+    if (!isTabSyncEnabled)
+      return;
+
     var syncedDeviceElem = this.$['history-synced-device-manager'];
     var syncedDeviceManager =
         /** @type {HistorySyncedDeviceManagerElement} */(syncedDeviceElem);
-    if (isTabSyncEnabled) {
-      syncedDeviceManager.setSyncedHistory(sessionList);
-      /** @type {HistoryToolbarElement} */(this.$.toolbar).hasSidebar = true;
-    }
+    syncedDeviceManager.setSyncedHistory(sessionList);
+    /** @type {HistoryToolbarElement} */(this.$.toolbar).hasSidebar = true;

[tsergeant, 2016/05/05 17:59:09]

Can you please change the implementation of history-toolbar to get rid of
hasSidebar, since it will always be true?

[calamity, 2016/05/05 18:49:33]

Good point. Done. I'll remove more of the extraneous stuff next patch when I
move the CBD button.

   },
 
   deleteComplete: function() {