Add an LRUBoundedCache class.

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 262 matching lines @@
           'json/string_escape.cc',
           'json/string_escape.h',
           'lazy_instance.cc',
           'lazy_instance.h',
           'location.cc',
           'location.h',
           'logging.cc',
           'logging.h',
           'logging_win.cc',
           'logging_win.h',
+          'lru_bounded_cache.h',
           'mac/authorization_util.h',
           'mac/authorization_util.mm',
           'mac/bind_objc_block.h',
           'mac/bundle_locations.h',
           'mac/bundle_locations.mm',
           'mac/call_with_eh_frame.cc',
           'mac/call_with_eh_frame.h',
           'mac/call_with_eh_frame_asm.S',
           'mac/close_nocancel.cc',
           'mac/cocoa_protocols.h',
@@ skipping 789 matching lines @@
           'i18n/time_formatting.h',
           'i18n/timezone.cc',
           'i18n/timezone.h',
           'i18n/utf8_validator_tables.cc',
           'i18n/utf8_validator_tables.h',
         ],
       }]
     ],
   },
 }