[MD History] Hide empty synced device cards.

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

Index: chrome/browser/resources/md_history/app.crisper.js
diff --git a/chrome/browser/resources/md_history/app.crisper.js b/chrome/browser/resources/md_history/app.crisper.js
index 5e2c14c595aec7c80c83e20c07f005151a999de5..b7f6ff5ad6e15daa35f43d9b8f9194c9d3981495 100644
--- a/chrome/browser/resources/md_history/app.crisper.js
+++ b/chrome/browser/resources/md_history/app.crisper.js
@@ -6475,10 +6475,10 @@ Polymer({
     }
     this.menuOpen = false;
   },
-  openMenu: function(anchor, itemData) {
+  openMenu: function(anchor, opt_itemData) {
     if (this.lastAnchor_ == anchor && this.menuOpen) return;
     if (this.menuOpen) this.closeMenu();
-    this.itemData = itemData;
+    this.itemData = opt_itemData || null;
     this.lastAnchor_ = anchor;
     this.$.dropdown.restoreFocusOnClose = true;
     var focusableChildren = Polymer.dom(this).querySelectorAll('[tabindex]:not([disabled]):not([hidden]),' + 'button:not([disabled]):not([hidden])');
@@ -6490,8 +6490,8 @@ Polymer({
     this.$.dropdown.positionTarget = anchor;
     this.menuOpen = true;
   },
-  toggleMenu: function(anchor, itemData) {
-    if (anchor == this.lastAnchor_ && this.menuOpen) this.closeMenu(); else this.openMenu(anchor, itemData);
+  toggleMenu: function(anchor, opt_itemData) {
+    if (anchor == this.lastAnchor_ && this.menuOpen) this.closeMenu(); else this.openMenu(anchor, opt_itemData);
   },
   onTabPressed_: function(e) {
     if (!this.firstFocus_ || !this.lastFocus_) return;
@@ -8643,8 +8643,10 @@ Polymer({
     }
     return show;
   },
-  noSyncedTabsMessage: function(fetchingSyncedTabs) {
-    return loadTimeData.getString(fetchingSyncedTabs ? 'loading' : 'noSyncedResults');
+  noSyncedTabsMessage: function() {
+    var stringName = this.fetchingSyncedTabs_ ? 'loading' : 'noSyncedResults';
+    if (this.searchTerm !== '') stringName = 'noSearchResults';
+    return loadTimeData.getString(stringName);
   },
   updateSyncedDevices: function(sessionList) {
     this.fetchingSyncedTabs_ = false;
@@ -8657,12 +8659,14 @@ Polymer({
     for (var i = 0; i < updateCount; i++) {
       var oldDevice = this.syncedDevices_[i];
       if (oldDevice.tag != sessionList[i].tag || oldDevice.timestamp != sessionList[i].timestamp) {
-        this.splice('syncedDevices_', i, 1, this.createInternalDevice_(sessionList[i]));
+        device = this.createInternalDevice_(sessionList[i]);
+        if (device.tabs.length != 0) this.splice('syncedDevices_', i, 1, device);
       }
     }
     if (sessionList.length >= this.syncedDevices_.length) {
       for (var i = updateCount; i < sessionList.length; i++) {
-        this.push('syncedDevices_', this.createInternalDevice_(sessionList[i]));
+        device = this.createInternalDevice_(sessionList[i]);
+        if (device.tabs.length != 0) this.push('syncedDevices_', device);
       }
     } else {
       this.splice('syncedDevices_', updateCount, this.syncedDevices_.length - updateCount);