Add policy to use system default printer

chrome/common/pref_names.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/common/pref_names.h"
 
 #include "base/macros.h"
 #include "build/build_config.h"
 #include "chrome/common/features.h"
 #include "chrome/common/pref_font_webkit_names.h"
@@ skipping 1212 matching lines @@
 const char kPrintingEnabled[] = "printing.enabled";
 
 // Boolean controlling whether print preview is disabled.
 const char kPrintPreviewDisabled[] = "printing.print_preview_disabled";
 
 // A pref holding the value of the policy used to control default destination
 // selection in the Print Preview. See DefaultPrinterSelection policy.
 const char kPrintPreviewDefaultDestinationSelectionRules[] =
     "printing.default_destination_selection_rules";
 
+// A pref that sets the default destination in print preview to always be the
+// OS default printer instead of the most recently used destination.
+const char kUseSystemDefaultPrinterAsDefault[] =

[Lei Zhang, 2017/06/15 18:26:16]

Can we put print preview in the name, since it does not affect printing with the
system print dialog? Maybe kPrintPreviewUseSystemDefaultPrinter?

[rbpotter, 2017/06/16 02:21:46]

Done.

+    "printing.use_system_default_printer";
+
 #if defined(OS_CHROMEOS)
 // List of all printers that the user has configured.
 const char kPrintingDevices[] = "printing.devices";
 
 // List of printers configured by policy.
 const char kRecommendedNativePrinters[] =
     "native_printing.recommended_printers";
 #endif  // OS_CHROMEOS
 
 // An integer pref specifying the fallback behavior for sites outside of content
@@ skipping 1311 matching lines @@
 // internal format (int64) in local store.  (I.e., this is not a per-profile
 // pref.)
 const char kClipboardLastModifiedTime[] = "ui.clipboard.last_modified_time";
 #endif
 
 #if BUILDFLAG(ENABLE_OFFLINE_PAGES)
 const char kOfflinePrefetchBackoff[] = "offline_prefetch.backoff";
 #endif
 
 }  // namespace prefs