Move test_file_util out of libbase. Test code should not be mixed with production code.

base/base.gyp

 # Copyright (c) 2009 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': [
     '../build/common.gypi',
@@ skipping 279 matching lines @@
         'sys_info_win.cc',
         'sys_string_conversions.h',
         'sys_string_conversions_linux.cc',
         'sys_string_conversions_mac.mm',
         'sys_string_conversions_win.cc',
         'system_monitor.cc',
         'system_monitor.h',
         'system_monitor_posix.cc',
         'system_monitor_win.cc',
         'task.h',
-        'test_file_util.h',
-        'test_file_util_linux.cc',
-        'test_file_util_mac.cc',
-        'test_file_util_posix.cc',
-        'test_file_util_win.cc',
         'thread.cc',
         'thread.h',
         'thread_collision_warner.cc',
         'thread_collision_warner.h',
         'thread_local.h',
         'thread_local_posix.cc',
         'thread_local_storage.h',
         'thread_local_storage_posix.cc',
         'thread_local_storage_win.cc',
         'thread_local_win.cc',
@@ skipping 377 matching lines @@
             'wmi_util_unittest.cc',
           ],
         }],
       ],
     },
     {
       'target_name': 'test_support_base',
       'type': '<(library)',
       'dependencies': [
         'base',
+      ],
+      'sources': [
+        'test_file_util.h',
+        'test_file_util_linux.cc',
+        'test_file_util_mac.cc',
+        'test_file_util_posix.cc',
+        'test_file_util_win.cc',
+      ],
+      'conditions': [
+        [ 'OS == "linux"', {
+            'sources/': [ ['exclude', '_(mac|win|chromeos)\\.cc$'],
+                          ['exclude', '\\.mm?$' ] ],
+            'conditions': [
+              [ 'chromeos==1', {
+                  'sources/': [ ['include', '_chromeos\\.cc$'] ]
+                },
+              ],
+            ],
+          },
+        ],
+        [ 'OS == "mac"', {
+            'sources/': [ ['exclude', '_(linux|win|chromeos)\\.cc$'] ],
+          },
+        ],
+        [ 'OS == "win"', {
+            'sources/': [ ['exclude', '_(linux|mac|posix|chromeos)\\.cc$'],
+                          ['exclude', '\\.mm?$' ] ],
+          },
+        ],
+      ],
+    },
+    {
+      'target_name': 'test_support_perf',
+      'type': '<(library)',
+      'dependencies': [
+        'base',
         '../testing/gtest.gyp:gtest',
       ],
       'sources': [
         'perftimer.cc',
         'run_all_perftests.cc',
       ],
       'direct_dependent_settings': {
         'defines': [
           'PERF_TEST',
         ],
@@ skipping 82 matching lines @@
                 '<@(_outputs)',
               ],
               'message': 'Generating version information',
             },
           ],
         },
       ],
     }],
   ],
 }