Add a method to query IPP printers for attributes.

chrome/browser/chromeos/BUILD.gn

Index: chrome/browser/chromeos/BUILD.gn
diff --git a/chrome/browser/chromeos/BUILD.gn b/chrome/browser/chromeos/BUILD.gn
index f16ea783b1385160b8bd401adb8afe5311e04a7c..e7ce83cfcd7c38194d53ee5e21ed3df5a8db3a58 100644
--- a/chrome/browser/chromeos/BUILD.gn
+++ b/chrome/browser/chromeos/BUILD.gn
@@ -1252,6 +1252,7 @@ source_set("chromeos") {
     "printing/printer_configurer.h",
     "printing/printer_discoverer.cc",
     "printing/printer_discoverer.h",
+    "printing/printer_info.h",
     "printing/printers_manager.cc",
     "printing/printers_manager.h",
     "printing/printers_manager_factory.cc",
@@ -1492,11 +1493,13 @@ source_set("chromeos") {
     sources += [
       "printing/cups_print_job_manager_impl.cc",
       "printing/cups_print_job_manager_impl.h",
+      "printing/printer_info_cups.cc",
     ]
   } else {
     sources += [
       "printing/fake_cups_print_job_manager.cc",
       "printing/fake_cups_print_job_manager.h",
+      "printing/printer_info_stub.cc",
     ]
   }