Move active field trial API to variations component.

chrome/common/metrics/variations/variations_util.h

 // Copyright (c) 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.
 
 #ifndef CHROME_COMMON_METRICS_VARIATIONS_VARIATIONS_UTIL_H_
 #define CHROME_COMMON_METRICS_VARIATIONS_VARIATIONS_UTIL_H_
 
-#include <string>
-#include <vector>
-
-#include "base/metrics/field_trial.h"
-#include "base/strings/string16.h"
-#include "components/variations/variations_associated_data.h"
-
 namespace chrome_variations {
 
-// Fills the supplied vector |name_group_ids| (which must be empty when called)
-// with unique ActiveGroupIds for each Field Trial that has a chosen group.
-// Field Trials for which a group has not been chosen yet are NOT returned in
-// this list.
-void GetFieldTrialActiveGroupIds(std::vector<ActiveGroupId>* name_group_ids);
-
-// Fills the supplied vector |output| (which must be empty when called) with
-// unique string representations of ActiveGroupIds for each Field Trial that
-// has a chosen group. The strings are formatted as "<TrialName>-<GroupName>",
-// with the names as hex strings. Field Trials for which a group has not been
-// chosen yet are NOT returned in this list.
-void GetFieldTrialActiveGroupIdsAsStrings(std::vector<std::string>* output);
-
 // Get the current set of chosen FieldTrial groups (aka variations) and send
 // them to the child process logging module so it can save it for crash dumps.
 void SetChildProcessLoggingVariationList();
 
-// Expose some functions for testing. These functions just wrap functionality
-// that is implemented above.
-namespace testing {
-
-// Clears all of the mapped associations.
-void ClearAllVariationIDs();
-
-void TestGetFieldTrialActiveGroupIds(
-    const base::FieldTrial::ActiveGroups& active_groups,
-    std::vector<ActiveGroupId>* name_group_ids);
-
-}  // namespace testing
-
 }  // namespace chrome_variations
 
 #endif  // CHROME_COMMON_METRICS_VARIATIONS_VARIATIONS_UTIL_H_