Remove bad CallJavascriptFunctionUnsafe call from PrintPreviewUI

chrome/browser/ui/webui/print_preview/print_preview_ui.cc

Index: chrome/browser/ui/webui/print_preview/print_preview_ui.cc
diff --git a/chrome/browser/ui/webui/print_preview/print_preview_ui.cc b/chrome/browser/ui/webui/print_preview/print_preview_ui.cc
index 74220ae3d0da2e1ea2d6562a3a9de3cb81d7bdd0..bc7405f9789addb7f2fd0242701459ebd7c0faa6 100644
--- a/chrome/browser/ui/webui/print_preview/print_preview_ui.cc
+++ b/chrome/browser/ui/webui/print_preview/print_preview_ui.cc
@@ -536,10 +536,12 @@ void PrintPreviewUI::OnInitiatorClosed() {
   WebContents* preview_dialog = web_ui()->GetWebContents();
   printing::BackgroundPrintingManager* background_printing_manager =
       g_browser_process->background_printing_manager();
-  if (background_printing_manager->HasPrintPreviewDialog(preview_dialog))
-    web_ui()->CallJavascriptFunctionUnsafe("cancelPendingPrintRequest");
-  else
+  if (background_printing_manager->HasPrintPreviewDialog(preview_dialog)) {
+    background_printing_manager->OnPrintRequestCancelled(preview_dialog);
+    handler_->HandleCancelPendingPrintRequest(nullptr);
+  } else {
     OnClosePrintPreviewDialog();
+  }
 }
 
 void PrintPreviewUI::OnPrintPreviewCancelled() {