Move base::FreeDeleter into its own header.

base/base.gypi

 # Copyright (c) 2012 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.
 
 {
   'includes': [
     'trace_event/trace_event.gypi',
   ],
   'target_defaults': {
     'variables': {
@@ skipping 328 matching lines @@
           'md5.cc',
           'md5.h',
           'memory/aligned_memory.cc',
           'memory/aligned_memory.h',
           'memory/discardable_memory.cc',
           'memory/discardable_memory.h',
           'memory/discardable_memory_allocator.cc',
           'memory/discardable_memory_allocator.h',
           'memory/discardable_shared_memory.cc',
           'memory/discardable_shared_memory.h',
+          'memory/free_deleter.h',
           'memory/linked_ptr.h',
           'memory/manual_constructor.h',
           'memory/memory_pressure_listener.cc',
           'memory/memory_pressure_listener.h',
           'memory/memory_pressure_monitor.cc',
           'memory/memory_pressure_monitor.h',
           'memory/memory_pressure_monitor_chromeos.cc',
           'memory/memory_pressure_monitor_chromeos.h',
           'memory/memory_pressure_monitor_mac.cc',
           'memory/memory_pressure_monitor_mac.h',
@@ skipping 718 matching lines @@
           'i18n/time_formatting.h',
           'i18n/timezone.cc',
           'i18n/timezone.h',
           'i18n/utf8_validator_tables.cc',
           'i18n/utf8_validator_tables.h',
         ],
       }]
     ],
   },
 }