Depend on content test support from printing test support library.

components/printing.gypi

 # Copyright 2015 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.
 
 {
   'targets': [
     {
       # GN: //components/printing/common:printing_common
       'target_name': 'printing_common',
       'type': 'static_library',
@@ skipping 46 matching lines @@
         'printing/browser/print_manager.cc',
         'printing/browser/print_manager.h',
         'printing/browser/print_manager_utils.cc',
         'printing/browser/print_manager_utils.h',
       ],
     },{
       # GN: //components/printing/test:printing_test_support
       'target_name': 'printing_test_support',
       'type': 'static_library',
       'dependencies': [
+        '../content/content_shell_and_tests.gyp:test_support_content',
         '../skia/skia.gyp:skia',
         '<(DEPTH)/testing/gtest.gyp:gtest',
         'printing_renderer',
       ],
       'sources': [
         'printing/test/mock_printer.cc',
         'printing/test/mock_printer.h',
         'printing/test/print_mock_render_thread.cc',
         'printing/test/print_mock_render_thread.h',
         'printing/test/print_test_content_renderer_client.cc',
         'printing/test/print_test_content_renderer_client.h',
       ],
     },
   ],
 }