Move printing defines to buildflag system.

chrome/browser/ui/webui/local_discovery/local_discovery_ui.cc

Index: chrome/browser/ui/webui/local_discovery/local_discovery_ui.cc
diff --git a/chrome/browser/ui/webui/local_discovery/local_discovery_ui.cc b/chrome/browser/ui/webui/local_discovery/local_discovery_ui.cc
index facd5bacf6fe1df7a6c350cd018e2052c848b2d7..130f1d511ef1ef562e0956269e08d98534d7acf6 100644
--- a/chrome/browser/ui/webui/local_discovery/local_discovery_ui.cc
+++ b/chrome/browser/ui/webui/local_discovery/local_discovery_ui.cc
@@ -18,6 +18,7 @@
 #include "content/public/browser/web_contents.h"
 #include "content/public/browser/web_ui.h"
 #include "content/public/browser/web_ui_data_source.h"
+#include "printing/features/features.h"
 
 namespace {
 
@@ -99,7 +100,7 @@ content::WebUIDataSource* CreateLocalDiscoveryHTMLSource() {
   source->AddLocalizedString("backButton", IDS_SETTINGS_TITLE);
 
   // Cloud print connector-related strings.
-#if defined(ENABLE_PRINT_PREVIEW) && !defined(OS_CHROMEOS)
+#if BUILDFLAG(ENABLE_PRINT_PREVIEW) && !defined(OS_CHROMEOS)
   source->AddLocalizedString("cloudPrintConnectorEnablingButton",
                              IDS_OPTIONS_CLOUD_PRINT_CONNECTOR_ENABLING_BUTTON);
   source->AddLocalizedString("cloudPrintConnectorDisabledButton",