Print Preview: Hiding header/footer options when 'no margins' is selected

chrome/browser/resources/print_preview/margin_settings.js

Index: chrome/browser/resources/print_preview/margin_settings.js
diff --git a/chrome/browser/resources/print_preview/margin_settings.js b/chrome/browser/resources/print_preview/margin_settings.js
index 1bfed187a0a908c88905392414c3b1bfa14fe1cd..ff34310f6b9e4ae21e4ed6e63a1621ca83c38274 100644
--- a/chrome/browser/resources/print_preview/margin_settings.js
+++ b/chrome/browser/resources/print_preview/margin_settings.js
@@ -562,6 +562,10 @@ cr.define('print_preview', function() {
         this.onDefaultMinimumNoMarginsSelected_();
       else if (this.isCustomMarginsSelected())
         this.onCustomMarginsSelected_();
+
+      var customEvent = cr.Event(customEvents.MARGINS_SELECTION_CHANGED);
+      customEvent.selectedMargins = this.selectedMarginsValue;
+      document.dispatchEvent(customEvent);
     },
 
     /**