Move chrome/common/metrics/variations to chrome/common/variations.

chrome/common/metrics/variations/experiment_labels.cc

Index: chrome/common/metrics/variations/experiment_labels.cc
diff --git a/chrome/common/metrics/variations/experiment_labels.cc b/chrome/common/metrics/variations/experiment_labels.cc
deleted file mode 100644
index 489c9c367c53f56550cc66a43dd522f3016211f3..0000000000000000000000000000000000000000
--- a/chrome/common/metrics/variations/experiment_labels.cc
+++ /dev/null
@@ -1,112 +0,0 @@
-// Copyright 2013 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.
-
-#include "chrome/common/metrics/variations/experiment_labels.h"
-
-#include "base/logging.h"
-#include "base/strings/string_number_conversions.h"
-#include "base/strings/string_split.h"
-#include "base/strings/string_util.h"
-#include "base/strings/utf_string_conversions.h"
-#include "chrome/installer/util/google_update_experiment_util.h"
-#include "components/variations/variations_associated_data.h"
-
-namespace chrome_variations {
-
-namespace {
-
-const char kVariationPrefix[] = "CrVar";
-
-// This method builds a single experiment label for a Chrome Variation,
-// including a timestamp that is a year in the future from |current_time|. Since
-// multiple headers can be transmitted, |count| is a number that is appended
-// after the label key to differentiate the labels.
-base::string16 CreateSingleExperimentLabel(int count, VariationID id,
-                                           const base::Time& current_time) {
-  // Build the parts separately so they can be validated.
-  const base::string16 key =
-      base::ASCIIToUTF16(kVariationPrefix) + base::IntToString16(count);
-  DCHECK_LE(key.size(), 8U);
-  const base::string16 value = base::IntToString16(id);
-  DCHECK_LE(value.size(), 8U);
-  base::string16 label(key);
-  label += base::ASCIIToUTF16("=");
-  label += value;
-  label += base::ASCIIToUTF16("|");
-  label += installer::BuildExperimentDateString(current_time);
-  return label;
-}
-
-}  // namespace
-
-base::string16 BuildGoogleUpdateExperimentLabel(
-    const base::FieldTrial::ActiveGroups& active_groups) {
-  base::string16 experiment_labels;
-  int counter = 0;
-
-  const base::Time current_time(base::Time::Now());
-
-  // Find all currently active VariationIDs associated with Google Update.
-  for (base::FieldTrial::ActiveGroups::const_iterator it =
-       active_groups.begin(); it != active_groups.end(); ++it) {
-    const VariationID id = GetGoogleVariationID(GOOGLE_UPDATE_SERVICE,
-                                                it->trial_name, it->group_name);
-
-    if (id == EMPTY_ID)
-      continue;
-
-    if (!experiment_labels.empty()) {
-      experiment_labels +=
-          base::ASCIIToUTF16(google_update::kExperimentLabelSep);
-    }
-    experiment_labels += CreateSingleExperimentLabel(++counter, id,
-                                                     current_time);
-  }
-
-  return experiment_labels;
-}
-
-base::string16 ExtractNonVariationLabels(const base::string16& labels) {
-  const base::string16 separator =
-      base::ASCIIToUTF16(google_update::kExperimentLabelSep);
-  base::string16 non_variation_labels;
-
-  // First, split everything by the label separator.
-  std::vector<base::string16> entries;
-  base::SplitStringUsingSubstr(labels, separator, &entries);
-
-  // For each label, keep the ones that do not look like a Variations label.
-  for (std::vector<base::string16>::const_iterator it = entries.begin();
-       it != entries.end(); ++it) {
-    if (it->empty() ||
-        StartsWith(*it, base::ASCIIToUTF16(kVariationPrefix), false)) {
-      continue;
-    }
-
-    // Dump the whole thing, including the timestamp.
-    if (!non_variation_labels.empty())
-      non_variation_labels += separator;
-    non_variation_labels += *it;
-  }
-
-  return non_variation_labels;
-}
-
-base::string16 CombineExperimentLabels(const base::string16& variation_labels,
-                                       const base::string16& other_labels) {
-  const base::string16 separator =
-      base::ASCIIToUTF16(google_update::kExperimentLabelSep);
-  DCHECK(!StartsWith(variation_labels, separator, false));
-  DCHECK(!EndsWith(variation_labels, separator, false));
-  DCHECK(!StartsWith(other_labels, separator, false));
-  DCHECK(!EndsWith(other_labels, separator, false));
-  // Note that if either label is empty, a separator is not necessary.
-  base::string16 combined_labels = other_labels;
-  if (!other_labels.empty() && !variation_labels.empty())
-    combined_labels += separator;
-  combined_labels += variation_labels;
-  return combined_labels;
-}
-
-}  // namespace chrome_variations