Port base/watchdog to Linux.

base/base_lib.scons

 # Copyright (c) 2006-2008 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.
 
 __doc__ = """
 Configuration for building base.lib / libbase.a.
 """
 
 Import('env')
 
 env = env.Clone()
 
 env.ApplySConscript([
     '$ICU38_DIR/using_icu38.scons',
 ])
 
 if env['PLATFORM'] == 'win32':
   env.Prepend(
       CCFLAGS = [
           '/Wp64',
       ],
   )
 
-# These base files work on *all* platforms; files that don't work
-# cross-platform live below.
+# Some files from this list are not yet ported. They are removed from
+# the list, see code below.
 input_files = [
     'at_exit.cc',
     'base_paths.cc',
     'base_switches.cc',
     'bzip2_error_handler.cc',
     'clipboard.cc',
     'clipboard_util.cc',
     'command_line.cc',
     'debug_util.cc',
     'event_recorder.cc',
@@ skipping 66 matching lines @@
 ])
 
 if env['PLATFORM'] in ('posix', 'darwin'):
   # Remove files that still need to be ported from the input_files list.
   # TODO(port): delete files from this list as they get ported.
   to_be_ported_files = [
     'clipboard_util.cc',
     'event_recorder.cc',
     'file_version_info.cc',
 
-    # This group all depends on MessageLoop.
-
     # We have an implementation of idle_timer, but it's unclear if we want it
     # yet, so it's commented out for now.  Leave this 'unported'.
     'idle_timer.cc',
 
     'object_watcher.cc',
-    'watchdog.cc',
 
     'resource_util.cc',  # Uses HMODULE, but may be abstractable.
   ]
   for remove in to_be_ported_files:
       input_files.remove(remove)
 
 if env['PLATFORM'] == 'win32':
   input_files.extend([
       'base_drag_source.cc',
       'base_drop_target.cc',
@@ skipping 75 matching lines @@
       'hmac_nss.cc',
       'message_pump_glib.cc',
       'nss_init.cc',
       'process_posix.cc',
       'process_util_linux.cc',
       'sys_string_conversions_linux.cc',
       'worker_pool.cc',
   ])
 
 env.ChromeStaticLibrary('base', input_files)