GN: Fix some breakage for os==chromeos build

chrome/common/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("//tools/grit/grit_rule.gni")
 
 gypi_values = exec_script(
     "//build/gypi_to_gn.py",
     [ rebase_path("../chrome_common.gypi") ],
     "scope",
@@ skipping 175 matching lines @@
   }
 
   if (is_win) {
     deps += [ "//third_party/wtl" ]
   }
 
   if (enable_mdns) {
     sources += [ "local_discovery/local_discovery_messages.h" ]
   }
 
-  if (is_chromeos) {
-    sources -= [ "chrome_version_info_linux.cc" ]
-  }
-
   if (is_mac) {
     sources -= [
       "chrome_version_info_posix.cc",
     ]
     deps += [
       "//third_party/mach_override",
       "//third_party/google_toolbox_for_mac",
     ]
   }
 
@@ skipping 78 matching lines @@
     "//components/bookmarks/common",
     "//third_party/widevine/cdm:version_h",
   ]
 
   if (enable_nacl) {
     deps += [
       #'../components/nacl.gyp:nacl_switches',  TODO(GYP)
     ]
   }
 }