Add printing tests to ensure window.print() works for subframes.

chrome/test/BUILD.gn

 # Copyright 2014 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.
 
 import("//build/config/chrome_build.gni")
 import("//build/config/compiler/compiler.gni")
 import("//build/config/crypto.gni")
 import("//build/config/features.gni")
 import("//build/config/ui.gni")
 import("//chrome/common/features.gni")
@@ skipping 1647 matching lines @@
       "../browser/prefs/synced_pref_change_registrar_browsertest.cc",
       "../browser/prefs/tracked/pref_hash_browsertest.cc",
       "../browser/prerender/prerender_browsertest.cc",
       "../browser/prerender/prerender_nostate_prefetch_browsertest.cc",
       "../browser/prerender/prerender_test_utils.cc",
       "../browser/previews/previews_service_browser_test.cc",
       "../browser/printing/cloud_print/test/cloud_print_policy_browsertest.cc",
       "../browser/printing/cloud_print/test/cloud_print_proxy_process_browsertest.cc",
       "../browser/printing/print_preview_dialog_controller_browsertest.cc",
       "../browser/printing/print_preview_pdf_generated_browsertest.cc",
+      "../browser/printing/print_view_manager_browsertest.cc",
       "../browser/process_singleton_browsertest.cc",
       "../browser/profile_resetter/profile_resetter_browsertest.cc",
       "../browser/profiles/host_zoom_map_browsertest.cc",
       "../browser/profiles/profile_browsertest.cc",
       "../browser/profiles/profile_list_desktop_browsertest.cc",
       "../browser/profiles/profile_manager_browsertest.cc",
       "../browser/profiles/profile_window_browsertest.cc",
       "../browser/push_messaging/push_messaging_browsertest.cc",
       "../browser/referrer_policy_browsertest.cc",
       "../browser/renderer_context_menu/mock_render_view_context_menu.cc",
@@ skipping 3417 matching lines @@
       "touch_hud",
       "ui",
     ]
 
     if (is_linux && !is_android) {
       deps += [ "//components/font_service:manifest" ]
       packaged_services += [ "font_service" ]
     }
   }
 }