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

build/googleurl_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 googleurl.lib / libgoogleurl.a.
 """
 
 Import('env')
 
 env = env.Clone()
 
 env.SConscript([
     '$ICU38_DIR/using_icu38.scons',
 ], {'env':env})
 
 env.Prepend(
     CPPPATH = [
         '$CHROME_SRC_DIR',
     ],
 )
 
-if env['PLATFORM'] == 'win32':
+if env.Bit('windows'):
   env.Append(
       CCFLAGS = [
           '/TP',
       ],
   )
 
 input_files = [
     'src/gurl.cc',
     'src/url_canon_etc.cc',
     'src/url_canon_fileurl.cc',
     'src/url_canon_host.cc',
     'src/url_canon_icu.cc',
     'src/url_canon_internal.cc',
     'src/url_canon_ip.cc',
     'src/url_canon_mailtourl.cc',
     'src/url_canon_path.cc',
     'src/url_canon_pathurl.cc',
     'src/url_canon_query.cc',
     'src/url_canon_relative.cc',
     'src/url_canon_stdurl.cc',
     'src/url_parse.cc',
     'src/url_parse_file.cc',
     'src/url_util.cc',
 ]
 
 env.ChromeStaticLibrary('googleurl', input_files)