Componentize about_flags::FeatureEntry in flags_ui component.

components/flags_ui/feature_entry.cc

Index: components/flags_ui/feature_entry.cc
diff --git a/components/flags_ui/feature_entry.cc b/components/flags_ui/feature_entry.cc
new file mode 100644
index 0000000000000000000000000000000000000000..b7556970cad778a9cef605e67d8c6bd5dcfa802e
--- /dev/null
+++ b/components/flags_ui/feature_entry.cc
@@ -0,0 +1,51 @@
+// 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.
+
+#include "components/flags_ui/feature_entry.h"
+
+#include "base/logging.h"
+#include "base/strings/string_number_conversions.h"
+#include "grit/components_strings.h"
+#include "ui/base/l10n/l10n_util.h"
+
+namespace flags_ui {
+
+std::string FeatureEntry::NameForChoice(int index) const {
+  DCHECK(type == FeatureEntry::MULTI_VALUE ||
+         type == FeatureEntry::ENABLE_DISABLE_VALUE ||
+         type == FeatureEntry::FEATURE_VALUE);
+  DCHECK_LT(index, num_choices);
+  return std::string(internal_name) + testing::kMultiSeparator +
+         base::IntToString(index);
+}
+
+base::string16 FeatureEntry::DescriptionForChoice(int index) const {
+  DCHECK(type == FeatureEntry::MULTI_VALUE ||
+         type == FeatureEntry::ENABLE_DISABLE_VALUE ||
+         type == FeatureEntry::FEATURE_VALUE);
+  DCHECK_LT(index, num_choices);
+  int description_id;
+  if (type == FeatureEntry::ENABLE_DISABLE_VALUE ||
+      type == FeatureEntry::FEATURE_VALUE) {
+    const int kEnableDisableDescriptionIds[] = {
+        IDS_GENERIC_EXPERIMENT_CHOICE_DEFAULT,
+        IDS_GENERIC_EXPERIMENT_CHOICE_ENABLED,
+        IDS_GENERIC_EXPERIMENT_CHOICE_DISABLED,
+    };
+    description_id = kEnableDisableDescriptionIds[index];
+  } else {
+    description_id = choices[index].description_id;
+  }
+  return l10n_util::GetStringUTF16(description_id);
+}
+
+namespace testing {
+
+// WARNING: '@' is also used in the html file. If you update this constant you
+// also need to update the html file.
+const char kMultiSeparator[] = "@";
+
+}  // namespace testing
+
+}  // namespace flags_ui