Print Preview: change getPreview to cr.sendWithPromise

chrome/browser/resources/print_preview/print_preview.js

Index: chrome/browser/resources/print_preview/print_preview.js
diff --git a/chrome/browser/resources/print_preview/print_preview.js b/chrome/browser/resources/print_preview/print_preview.js
index 8e915cc5e019a7262c524e0b4e4835f8e8a9e260..4060b4fe9d0baab7f6be0e8f3d146b3c0457cdbc 100644
--- a/chrome/browser/resources/print_preview/print_preview.js
+++ b/chrome/browser/resources/print_preview/print_preview.js
@@ -348,10 +348,6 @@ cr.define('print_preview', function() {
     enterDocument: function() {
       // Native layer events.
       var nativeLayerEventTarget = this.nativeLayer_.getEventTarget();
-      this.tracker.add(
-          nativeLayerEventTarget,
-          print_preview.NativeLayer.EventType.SETTINGS_INVALID,
-          this.onSettingsInvalid_.bind(this));
       this.tracker.add(
           nativeLayerEventTarget,
           print_preview.NativeLayer.EventType.PRINT_PRESET_OPTIONS,
@@ -392,6 +388,10 @@ cr.define('print_preview', function() {
           this.previewArea_,
           print_preview.PreviewArea.EventType.OPEN_SYSTEM_DIALOG_CLICK,
           this.openSystemPrintDialog_.bind(this));
+      this.tracker.add(
+          this.previewArea_,
+          print_preview.PreviewArea.EventType.SETTINGS_INVALID,
+          this.onSettingsInvalid_.bind(this));
 
       this.tracker.add(
           this.destinationStore_,