Oilpan: Add a compile-time flag: DETAILED_MEMORY_INFRA

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 31 matching lines @@
       'ENABLE_LAYOUT_UNIT_IN_INLINE_BOXES=0',
       # WTF_USE_DYNAMIC_ANNOTATIONS=1 may be defined in build/common.gypi
       # We can't define it here because it should be present only
       # in Debug or release_valgrind_build=1 builds.
     ],
     # We have to nest variables inside variables so that they can be overridden
     # through GYP_DEFINES.
     'variables': {
       # Enables the Oilpan garbage-collection infrastructure.
       'enable_oilpan%': 0,
+      # TODO(haraken): Remove blink_gc_profiling. It's replaced with
+      # detailed_memory_infra.
       'blink_gc_profiling%': 0,

[bashi, 2015/09/08 03:52:27]

why can't we remove this now?

+      'detailed_memory_infra%': 0,
       'blink_logging_always_on%': 0,
       'link_core_modules_separately%': 1,
     },
     'conditions': [
       ['use_concatenated_impulse_responses==1', {
         # Use concatenated HRTF impulse responses
         'feature_defines': ['WTF_USE_CONCATENATED_IMPULSE_RESPONSES=1'],
       }],
       ['OS!="android"', {
         'feature_defines': [
@@ skipping 31 matching lines @@
         'feature_defines': [
           'ENABLE_LAZY_SWEEPING=1',
           'ENABLE_IDLE_GC=1',
         ],
       }],
       ['blink_gc_profiling==1', {
         'feature_defines': [
           'ENABLE_GC_PROFILING=1',
         ],
       }],
+      ['detailed_memory_infra==1', {
+        'feature_defines': [
+          'ENABLE_DETAILED_MEMORY_INFRA=1',
+        ],
+      }],
       ['blink_logging_always_on==1', {
         'feature_defines': [
           'LOG_DISABLED=0',
         ],
       }],
       ['link_core_modules_separately==1 and component=="shared_library"', {
         '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)',
   },
 }