base: Refactor DiscardableMemoryManager for use with different type of allocations.

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.
 
 {
   'target_defaults': {
     'variables': {
       'base_target': 0,
       'base_i18n_target': 0,
     },
@@ skipping 296 matching lines @@
           'mac/scoped_sending_event.mm',
           'mac/scoped_typeref.h',
           'mac/sdk_forward_declarations.h',
           'macros.h',
           'md5.cc',
           'md5.h',
           'memory/aligned_memory.cc',
           'memory/aligned_memory.h',
           'memory/discardable_memory.cc',
           'memory/discardable_memory.h',
+          'memory/discardable_memory_allocation.h',
           'memory/discardable_memory_allocator_android.cc',
           'memory/discardable_memory_allocator_android.h',
           'memory/discardable_memory_android.cc',
           'memory/discardable_memory_emulated.cc',
           'memory/discardable_memory_emulated.h',
           'memory/discardable_memory_linux.cc',
           'memory/discardable_memory_mac.cc',
           'memory/discardable_memory_malloc.cc',
           'memory/discardable_memory_malloc.h',
           'memory/discardable_memory_manager.cc',
@@ skipping 656 matching lines @@
           'i18n/time_formatting.h',
           'i18n/timezone.cc',
           'i18n/timezone.h',
           'i18n/utf8_validator_tables.cc',
           'i18n/utf8_validator_tables.h',
         ],
       }]
     ],
   },
 }