Add a unittest for the CPU class....

base/base.gyp

 # Copyright (c) 2011 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,
   },
   'includes': [
     'base.gypi',
@@ skipping 13 matching lines @@
           'dependencies': [
             # i18n/rtl.cc uses gtk
             '../build/linux/system.gyp:gtk',
           ],
         }],
       ],
       'export_dependent_settings': [
         'base',
       ],
       'sources': [
-        'i18n/bidi_line_iterator.cc',
-        'i18n/bidi_line_iterator.h',
+        'i18n/bidi_line_iterator.cc',
+        'i18n/bidi_line_iterator.h',
         'i18n/break_iterator.cc',
         'i18n/break_iterator.h',
         'i18n/char_iterator.cc',
         'i18n/char_iterator.h',
         'i18n/file_util_icu.cc',
         'i18n/file_util_icu.h',
         'i18n/icu_encoding_detection.cc',
         'i18n/icu_encoding_detection.h',
         'i18n/icu_string_conversions.cc',
         'i18n/icu_string_conversions.h',
@@ skipping 16 matching lines @@
         'test/run_all_unittests.cc',
 
         # Tests.
         'at_exit_unittest.cc',
         'atomicops_unittest.cc',
         'base64_unittest.cc',
         'bind_unittest.cc',
         'bits_unittest.cc',
         'callback_unittest.cc',
         'command_line_unittest.cc',
+        'cpu_unittest.cc',
         'crypto/encryptor_unittest.cc',
         'crypto/rsa_private_key_unittest.cc',
         'crypto/rsa_private_key_nss_unittest.cc',
         'crypto/secure_hash_unittest.cc',
         'crypto/signature_creator_unittest.cc',
         'crypto/signature_verifier_unittest.cc',
         'crypto/symmetric_key_unittest.cc',
         'debug/leak_tracker_unittest.cc',
         'debug/stack_trace_unittest.cc',
         'debug/trace_event_win_unittest.cc',
@@ skipping 245 matching lines @@
       ],
     }],
   ],
 }
 
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