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

webkit/build/JavaScriptCore/SConscript

 # 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.
 
 Import('env')
 
 env = env.Clone()
 
 
 cygwin = env.Dir('$CHROME_SRC_DIR/third_party/cygwin/bin')
@@ skipping 102 matching lines @@
 env.Append(
     CPPDEFINES = [
         '__STD_C',
         'U_STATIC_IMPLEMENTATION',
     ],
     CPPPATH = [
         '$WTF_DIR/unicode',
     ],
 )
 
-if env['PLATFORM'] == 'win32':
+if env.Bit('windows'):
     env.Append(
         CPPPATH = [
                 # Windows workarounds to not having pthread.h and sched.h
                 '$WEBKIT_DIR/build/JavaScriptCore',
                 # Windows workarounds to not having stdint.h
                 '$JAVASCRIPTCORE_DIR/os-win32',
                 ],
         CPPDEFINES = [
                 'CRASH=__debugbreak',
                 ],
@@ skipping 16 matching lines @@
     '$WTF_DIR/dtoa.cpp',
     '$WTF_DIR/FastMalloc.cpp',
     '$WTF_DIR/HashTable.cpp',
     '$WTF_DIR/MainThread.cpp',
     '$WTF_DIR/RefCountedLeakCounter.cpp',
     '$WTF_DIR/TCSystemAlloc.cpp',
     '$WTF_DIR/unicode/UTF8.cpp',
     '$WTF_DIR/unicode/icu/CollatorICU.cpp',
 ]
 
-if env['PLATFORM'] == 'win32':
+if env.Bit('windows'):
   wtf_inputs.extend([
       '$WTF_DIR/ThreadingWin.cpp',
   ])
-elif env['PLATFORM'] == 'posix':
+elif env.Bit('linux'):
   wtf_inputs.extend([
       '$WTF_DIR/gtk/MainThreadGtk.cpp',
       '$WTF_DIR/ThreadingPthreads.cpp',
   ])
 
   # Re-add the include path for glib.h because it got lost when cloning the
   # environment.
   env.ParseConfig('pkg-config --cflags --libs glib-2.0')
 
 
 env.ChromeStaticLibrary('WTF', wtf_inputs)