Move active field trial API to variations component.

components/components_tests.gyp

 # Copyright 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': {
     # This turns on e.g. the filename-based detection of which
     # platforms to include source files on (e.g. files ending in
     # _mac.h or _mac.cc are only compiled on MacOSX).
     'chromium_code': 1,
@@ skipping 151 matching lines @@
             'translate/core/browser/translate_prefs_unittest.cc',
             'translate/core/browser/translate_script_unittest.cc',
             'translate/core/common/translate_metrics_unittest.cc',
             'translate/core/common/translate_util_unittest.cc',
             'translate/core/language_detection/language_detection_util_unittest.cc',
             'url_matcher/regex_set_matcher_unittest.cc',
             'url_matcher/string_pattern_unittest.cc',
             'url_matcher/substring_set_matcher_unittest.cc',
             'url_matcher/url_matcher_factory_unittest.cc',
             'url_matcher/url_matcher_unittest.cc',
+            'variations/active_field_trials_unittest.cc',
             'variations/caching_permuted_entropy_provider_unittest.cc',
             'variations/entropy_provider_unittest.cc',
             'variations/metrics_util_unittest.cc',
             'variations/study_filtering_unittest.cc',
             'variations/variations_associated_data_unittest.cc',
             'variations/variations_seed_processor_unittest.cc',
             'variations/variations_seed_simulator_unittest.cc',
             'visitedlink/test/visitedlink_unittest.cc',
             'web_modal/web_contents_modal_dialog_manager_unittest.cc',
           ],
@@ skipping 530 matching lines @@
               'dependencies': [
                 '../base/allocator/allocator.gyp:allocator',
               ],
             }],
           ],
         },
       ],
     }],
   ],
 }