Convert from using env['PLATFORM'] directly to using the more flexible...

chrome/third_party/hunspell/SConscript

 # Copyright 2008, Google Inc.
 # All rights reserved.
 #
 # Redistribution and use in source and binary forms, with or without
 # modification, are permitted provided that the following conditions are
 # met:
 #
 #    * Redistributions of source code must retain the above copyright
 # notice, this list of conditions and the following disclaimer.
 #    * Redistributions in binary form must reproduce the above
@@ skipping 30 matching lines @@
 )
 
 env.Append(
     CPPDEFINES = [
         'OPENOFFICEORG',
         'CHROME_SPELL',
         'HUNSPELL_CHROME_CLIENT',
     ],
 )
 
-if env['PLATFORM'] == 'win32':
+if env.Bit('windows'):
   env.Append(
       CPPDEFINES = [
           'W32',
       ], 
       CCFLAGS = [
           '/TP',
 
           '/wd4800',
       ],
   )
 
-if env['PLATFORM'] == 'posix':
+if env.Bit('linux'):
   env.Append(
       CCFLAGS = [
           '-Wno-parentheses',
           '-Wno-unused-value',
           '-Wno-unused-variable',
           '-Wno-write-strings',
       ],
   )
 
 input_files = [
@@ skipping 13 matching lines @@
 
 
 dictionaries = [
     'dictionaries/en-US-1-1.bdic',
     'dictionaries/en-US.dic',
     'dictionaries/en-US.aff',
 ]
 
 i = env.Install('$DESTINATION_ROOT/Dictionaries', dictionaries)
 env.Alias('chrome_Dictionaries', i)