GN: Fix some breakage for os==chromeos build

chrome/chrome_common.gypi

 # Copyright (c) 2013 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': {
     # File lists shared with GN build.
     'chrome_common_sources': [
       '../apps/app_shim/app_shim_launch.h',
       '../apps/app_shim/app_shim_messages.h',
@@ skipping 456 matching lines @@
           ],
           'dependencies': [
             '<(DEPTH)/components/components.gyp:dom_distiller_core',  # Needed by chrome_content_client.cc.
           ],
         }],
         ['enable_mdns == 1', {
             'sources': [
               'common/local_discovery/local_discovery_messages.h',
             ]
         }],
-        ['chromeos==1', {
-          'sources!': [
-            'common/chrome_version_info_linux.cc',
-          ],
-        }],
         ['OS=="mac"', {
           'dependencies': [
             '../third_party/google_toolbox_for_mac/google_toolbox_for_mac.gyp:google_toolbox_for_mac',
             '../third_party/mach_override/mach_override.gyp:mach_override',
           ],
           'include_dirs': [
             '<(DEPTH)/breakpad/src',
           ],
           'sources!': [
             'common/chrome_version_info_posix.cc',
@@ skipping 201 matching lines @@
         'common/safe_browsing/csd.proto'
       ],
       'variables': {
         'proto_in_dir': 'common/safe_browsing',
         'proto_out_dir': 'chrome/common/safe_browsing',
       },
       'includes': [ '../build/protoc.gypi' ],
     },
   ],
 }