Print Preview: Don't load privet printers

Fixed: 1148535
Change-Id: Iab37489f503d07b498e36e1a8c60cd7e3bf7c44f
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2536352
Commit-Queue: Rebekah Potter <rbpotter@chromium.org>
Reviewed-by: Daniel Hosseinian <dhoss@chromium.org>
Cr-Commit-Position: refs/heads/master@{#827146}

chrome/browser/resources/print_preview/data/destination_store.js

@@ -912,11 +912,17 @@ export class DestinationStore extends EventTarget {
   startLoadAllDestinations() {
     // Printer types that need to be retrieved from the handler.
     const types = [
-      PrinterType.PRIVET_PRINTER,
       PrinterType.EXTENSION_PRINTER,
       PrinterType.LOCAL_PRINTER,
     ];
 
+    // TODO (rbpotter): Remove the code below once this flag and policy are no
+    // longer supported. Remove the privet flag in M90.
+    if (loadTimeData.getBoolean('forceEnablePrivetPrinting') ||
+        loadTimeData.getBoolean('cloudPrintDeprecationWarningsSuppressed')) {
+      types.push(PrinterType.PRIVET_PRINTER);
+    }
+
     // Cloud destinations are pulled from the cloud print server instead of the
     // NativeLayer/PrintPreviewHandler.
     this.startLoadCloudDestinations();

chrome/test/data/webui/print_preview/destination_dialog_test.js

@@ -219,6 +219,10 @@ suite(destination_dialog_test.suiteName, function() {
     const user2 = 'bar@chromium.org';
     cloudPrintInterface.setPrinter(getGoogleDriveDestination(user1));
     cloudPrintInterface.setPrinter(getGoogleDriveDestination(user2));
+    // Override so that privet printers will also be fetched, since we are
+    // simulating the case where the enterprise override is enabled.
+    loadTimeData.overrideValues(
+        {'cloudPrintDeprecationWarningsSuppressed': true});
     let userSelect = null;
 
     await finishSetup();