Adds PrintingContext implementation stub for Android.

printing/printing.gyp

 # 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.
 
 {
   'variables': {
     'chromium_code': 1,
   },
   'targets': [
     {
@@ skipping 19 matching lines @@
         'backend/print_backend.cc',
         'backend/print_backend.h',
         'backend/print_backend_consts.cc',
         'backend/print_backend_consts.h',
         'backend/print_backend_dummy.cc',
         'backend/printing_info_win.cc',
         'backend/printing_info_win.h',
         'emf_win.cc',
         'emf_win.h',
         'image.cc',
+        'image_android.cc',
         'image_linux.cc',
         'image_mac.cc',
         'image_win.cc',
         'image.h',
         'metafile.h',
         'metafile_impl.h',
         'metafile_skia_wrapper.h',
         'metafile_skia_wrapper.cc',
         'page_number.cc',
         'page_number.h',
@@ skipping 171 matching lines @@
           'sources': [
             'backend/print_backend_chromeos.cc',
           ],
         }],
         ['toolkit_uses_gtk==1 and chromeos==0', {
           'sources': [
             'printing_context_gtk.cc',
             'printing_context_gtk.h',
           ],
         }],
+        ['OS=="android"', {
+          'sources': [
+            'printing_context_android.h',

[Lei Zhang, 2013/08/19 21:02:15]

Shouldn't you be able to just put this in the sources list with everything else?
Shouldn't build/filename_rules.gypi filter this out for non-Android builds?

+          ],
+        }],
       ],
     },
     {
       'target_name': 'printing_unittests',
       'type': 'executable',
       'dependencies': [
         'printing',
         '../testing/gtest.gyp:gtest',
         '../base/base.gyp:test_support_base',
         '../ui/ui.gyp:ui',
@@ skipping 79 matching lines @@
                   '<!@(python cups_config_helper.py --cflags)',
                 ],
               }],
             ],
           },
         }],
       ],
     },
   ],
 }