Update print preview test to not use CallJavascriptFunctionUnsafe

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

Index: chrome/browser/ui/webui/print_preview/print_preview_handler.cc
diff --git a/chrome/browser/ui/webui/print_preview/print_preview_handler.cc b/chrome/browser/ui/webui/print_preview/print_preview_handler.cc
index 222b4d90eec7b3c963d3eba8118c5696443d5377..80c9139db3e684686934674e3064de15454c91df 100644
--- a/chrome/browser/ui/webui/print_preview/print_preview_handler.cc
+++ b/chrome/browser/ui/webui/print_preview/print_preview_handler.cc
@@ -1929,3 +1929,12 @@ void PrintPreviewHandler::SetPdfSavedClosureForTesting(
     const base::Closure& closure) {
   pdf_file_saved_closure_ = closure;
 }
+
+void PrintPreviewHandler::SendEnableManipulateSettingsForTest() {
+  FireWebUIListener("enable-manipulate-settings-for-test", base::Value());
+}
+
+void PrintPreviewHandler::SendManipulateSettingsForTest(
+    const base::DictionaryValue& settings) {
+  FireWebUIListener("manipulate-settings-for-test", settings);
+}