MD Settings: Storage: Use hidden attribute instead of dom-if binding to hide a row.

chrome/browser/resources/settings/device_page/storage.js

Index: chrome/browser/resources/settings/device_page/storage.js
diff --git a/chrome/browser/resources/settings/device_page/storage.js b/chrome/browser/resources/settings/device_page/storage.js
index 84453c690d6e69289bf54520ffc7111272812032..6649b8397e41b38e246e59b5070d050a1c6e71a6 100644
--- a/chrome/browser/resources/settings/device_page/storage.js
+++ b/chrome/browser/resources/settings/device_page/storage.js
@@ -82,9 +82,11 @@ Polymer({
     cr.addWebUIListener(
         'storage-android-size-changed',
         this.handleAndroidSizeChanged_.bind(this));
-    cr.addWebUIListener(
-        'storage-other-users-size-changed',
-        this.handleOtherUsersSizeChanged_.bind(this));
+    if (!this.isGuest_) {
+      cr.addWebUIListener(
+          'storage-other-users-size-changed',
+          this.handleOtherUsersSizeChanged_.bind(this));
+    }
     cr.addWebUIListener(
         'storage-drive-enabled-changed',
         this.handleDriveEnabledChanged_.bind(this));
@@ -178,7 +180,8 @@ Polymer({
    * @private
    */
   handleDriveCacheSizeChanged_: function(size) {
-    this.$.driveCacheSize.textContent = size;
+    if (this.driveEnabled_)
+      this.$$('#driveCacheSize').textContent = size;
   },
 
   /**
@@ -196,7 +199,8 @@ Polymer({
    * @private
    */
   handleAndroidSizeChanged_: function(size) {
-    this.$.androidSize.textContent = size;
+    if (this.androidEnabled_)
+      this.$$('#androidSize').textContent = size;
   },
 
   /**
@@ -204,7 +208,8 @@ Polymer({
    * @private
    */
   handleOtherUsersSizeChanged_: function(size) {
-    this.$.otherUsersSize.textContent = size;
+    if (!this.isGuest_)
+      this.$$('#otherUsersSize').textContent = size;
   },
 
   /**