Extend VariationParamsManager to support feature associations.

chrome/test/BUILD.gn

 # Copyright 2014 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.
 
 import("//build/config/chrome_build.gni")
 import("//build/config/compiler/compiler.gni")
 import("//build/config/crypto.gni")
 import("//build/config/features.gni")
 import("//build/config/ui.gni")
 import("//chrome/common/features.gni")
@@ skipping 3423 matching lines @@
     # 2) test-specific support libraries:
     ":test_support",
     ":test_support_unit",
     "//base/test:test_support",
     "//components/browser_sync:test_support",
     "//components/content_settings/core/test:test_support",
     "//components/resources",
     "//components/sync:test_support_driver",
     "//components/sync:test_support_model",
     "//components/sync_sessions:test_support",
+    "//components/variations:test_support",
     "//content/public/app:both",
     "//content/test:test_support",
     "//crypto:platform",
     "//crypto:test_support",
     "//net",
     "//net:test_support",
     "//testing/gmock",
     "//testing/gtest",
 
     # 3) anything tests directly depend on
@@ skipping 1662 matching lines @@
 }
 
 if (is_win) {
   loadable_module("conflicts_dll") {
     testonly = true
     sources = [
       "conflicts/conflicts_dll.cc",
     ]
   }
 }