Make PluginInstance::PrintPDFOutput-metafile implementation agnostic on Linux.

printing/printing.gyp

 # Copyright (c) 2011 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 76 matching lines @@
       'conditions': [
         ['OS!="linux" and OS!="freebsd" and OS!="openbsd"',{
             'sources/': [['exclude', '_cairo\\.cc$']]
         }],
         ['OS!="mac"', {'sources/': [['exclude', '_mac\\.(cc|mm?)$']]}],
         ['OS!="win"', {'sources/': [['exclude', '_win\\.cc$']]
           }, {  # else: OS=="win"
             'sources/': [['exclude', '_posix\\.cc$']]
         }],
         ['OS=="linux" or OS=="freebsd" or OS=="openbsd"', {
+          'sources': [
+            'native_metafile_skia_wrapper.cc',
+            'native_metafile_skia_wrapper.h',
+          ],
           'dependencies': [
             # For FT_Init_FreeType and friends.
             '../build/linux/system.gyp:freetype2',
             '../build/linux/system.gyp:gtk',
             '../build/linux/system.gyp:gtkprint',
           ],
         }],
         ['OS=="win"', {
           'defines': [
             # PRINT_BACKEND_AVAILABLE disables the default dummy implementation
@@ skipping 84 matching lines @@
       ],
     },
   ],
 }
 
 # Local Variables:
 # tab-width:2
 # indent-tabs-mode:nil
 # End:
 # vim: set expandtab tabstop=2 shiftwidth=2: