Move Field Trial Utils from chrome/common/variations to components/variations/field_trial_util

chrome/common/variations/BUILD.gn

-# Copyright 2015 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.
-
-action("fieldtrial_testing_config_action") {
-  visibility = [ ":fieldtrial_testing_config" ]
-  script = "//tools/variations/fieldtrial_to_struct.py"
-
-  source = "//testing/variations/fieldtrial_testing_config.json"
-  inputs = [
-    "//tools/json_to_struct/element_generator.py",
-    "//tools/json_to_struct/json_to_struct.py",
-    "//tools/json_to_struct/struct_generator.py",
-    source,
-  ]
-  out_name = "fieldtrial_testing_config"
-  outputs = [
-    "$target_gen_dir/$out_name.cc",
-    "$target_gen_dir/$out_name.h",
-  ]
-
-  args = [
-    rebase_path(source, root_build_dir),
-    "--destbase=" + rebase_path(target_gen_dir, root_build_dir),
-    "--namespace=chrome_variations",
-    "--schema=" +
-        rebase_path("fieldtrial_testing_config_schema.json", root_build_dir),
-    "--platform=" + current_os,
-    "--output=$out_name",
-  ]
-}
-
-source_set("fieldtrial_testing_config") {
-  sources = get_target_outputs(":fieldtrial_testing_config_action")
-  deps = [
-    ":fieldtrial_testing_config_action",
-  ]
-}