Oilpan: Add ENABLE_LAZY_SWEEPING and ENABLE_IDLE_GC to features.gypi

Source/build/features.gypi

 #
 # Copyright (C) 2009 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 68 matching lines @@
         ],
       }],
       ['use_default_render_theme==1', {
         'feature_defines': [
           'WTF_USE_DEFAULT_RENDER_THEME=1',
         ],
       }],
       ['enable_oilpan==1', {
         'feature_defines': [
           'ENABLE_OILPAN=1',
+          'ENABLE_LAZY_SWEEPING=1',
+          'ENABLE_IDLE_GC=1',
           'ENABLE_INLINED_TRACE=1',
         ],
+      }, {
+        'feature_defines': [

[peria, 2015/06/02 09:03:24]

Please do either one of following items.
1. Leave TODO comments that are removed in some .h files here.
2. Remove this "else" part.  We can assume ENABLE(FOO) is false by default.

+          'ENABLE_LAZY_SWEEPING=0',
+          'ENABLE_IDLE_GC=0',
+        ],
       }],
       ['blink_gc_profiling==1', {
         'feature_defines': [
           'ENABLE_GC_PROFILING=1',
         ],
       }],
       ['blink_logging_always_on==1', {
         'feature_defines': [
           'LOG_DISABLED=0',
         ],
       }],
       ['link_core_modules_separately==1', {
         'feature_defines': [
           'LINK_CORE_MODULES_SEPARATELY',
         ],
       }],
     ],
 
     # shared build only. If set to 1, link web, core and modules separately.
     'link_core_modules_separately%': '<(link_core_modules_separately)',
   },
 }