[cros] Add RecursiveLock for CrOS implementation.

rlz/rlz.gyp

 # 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.
 
 {
   'variables': {
     'chromium_code': 1,
     'variables': {
       # Force rlz to use chrome's networking stack.
       'force_rlz_use_chrome_net%': 1,
@@ skipping 24 matching lines @@
         'lib/assert.h',
         'lib/crc32.h',
         'lib/crc32_wrapper.cc',
         'lib/crc8.h',
         'lib/crc8.cc',
         'lib/financial_ping.cc',
         'lib/financial_ping.h',
         'lib/lib_values.cc',
         'lib/machine_id.cc',
         'lib/machine_id.h',
+        'lib/recursive_lock.cc',
+        'lib/recursive_lock.h',
         'lib/rlz_enums.h',
         'lib/rlz_lib.cc',
         'lib/rlz_lib.h',
         'lib/rlz_lib_clear.cc',
         'lib/lib_values.h',
         'lib/rlz_value_store.h',
         'lib/string_utils.cc',
         'lib/string_utils.h',
         'mac/lib/machine_id_mac.cc',
         'mac/lib/rlz_value_store_mac.mm',
@@ skipping 30 matching lines @@
         }, {
           'defines': [
             'RLZ_NETWORK_IMPLEMENTATION_WIN_INET',
           ],
           'direct_dependent_settings': {
             'defines': [
               'RLZ_NETWORK_IMPLEMENTATION_WIN_INET',
             ],
           },
         }],
+        ['chromeos==0', {
+          'sources!': [
+            'lib/recursive_lock.cc',
+            'lib/recursive_lock.h',
+          ]
+        }],
       ],
     },
     {
       'target_name': 'rlz_unittests',
       'type': 'executable',
       'dependencies': [
         ':rlz_lib',
         '../base/base.gyp:base',
         '../testing/gmock.gyp:gmock',
         '../testing/gtest.gyp:gtest',
         '../third_party/zlib/zlib.gyp:zlib',
       ],
       'sources': [
         'lib/crc32_unittest.cc',
         'lib/crc8_unittest.cc',
         'lib/financial_ping_test.cc',
         'lib/lib_values_unittest.cc',
         'lib/machine_id_unittest.cc',
+        'lib/recursive_lock_unittest.cc',
         'lib/rlz_lib_test.cc',
         'lib/string_utils_unittest.cc',
         'test/rlz_test_helpers.cc',
         'test/rlz_test_helpers.h',
         'test/rlz_unittest_main.cc',
         'win/lib/machine_deal_test.cc',
       ],
       'conditions': [
         ['rlz_use_chrome_net==1', {
           'dependencies': [
             '../net/net.gyp:net_test_support',
           ],
+        }],
+        ['chromeos==0', {
+          'sources!': [
+            'lib/recursive_lock_unittest.cc',
+          ],
         }]
       ],
     },
     {
       'target_name': 'rlz_id',
       'type': 'executable',
       'dependencies': [
         ':rlz_lib',
       ],
       'sources': [
@@ skipping 13 matching lines @@
           ],
           'dependencies': [
             ':rlz_lib',
             '../third_party/zlib/zlib.gyp:zlib',
           ],
         },
       ],
     }],
   ],
 }