MD Settings: Migrate from paper-drawer-panel to app-drawer.

chrome/browser/resources/settings/settings_ui/settings_ui.js

Index: chrome/browser/resources/settings/settings_ui/settings_ui.js
diff --git a/chrome/browser/resources/settings/settings_ui/settings_ui.js b/chrome/browser/resources/settings/settings_ui/settings_ui.js
index f963adaa2ab6d45e5fed845944a5a9269c47c1ba..a952834841c994c4332d7a6ec6b4f56ec1a48fdc 100644
--- a/chrome/browser/resources/settings/settings_ui/settings_ui.js
+++ b/chrome/browser/resources/settings/settings_ui/settings_ui.js
@@ -33,11 +33,15 @@ Polymer({
 
   /** @private */
   onIronActivate_: function() {
-    this.$.panel.closeDrawer();
+    this.$$('app-drawer').close();
   },
 
   /** @private */
   directionDelegateChanged_: function() {
-    this.$.panel.rightDrawer = this.directionDelegate.isRtl();
+    //this.$.panel.rightDrawer = this.directionDelegate.isRtl();
+  },
+
+  onMenuButtonTap_: function() {
+    this.$$('app-drawer').toggle();
   },
 });