Swallow 'enter' key press if destination search dialog is open.

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 fe7c035c3437816f4b714cfe0dd04dd6542bb9ce..bbcfed8c18d2530572253a635b438375ac30d694 100644
--- a/chrome/browser/resources/print_preview/print_preview.js
+++ b/chrome/browser/resources/print_preview/print_preview.js
@@ -657,7 +657,9 @@ cr.define('print_preview', function() {
         }
       }
 
-      if (e.keyCode == 13 /*enter*/ && this.printTicketStore_.isTicketValid()) {
+      if (e.keyCode == 13 /*enter*/ &&
+          !this.destinationSearch_.getIsVisible() &&
+          this.printTicketStore_.isTicketValid()) {
         assert(this.uiState_ == PrintPreview.UiState_.READY,
           'Trying to print when not in ready state: ' + this.uiState_);
         this.printDocumentOrOpenPdfPreview_(false /*isPdfPreview*/);