Add new badge to multipaste option in the textfield context menu

Set the multipaste clipboard menu option as a new feature, depending on
whether or not the feature flag should show.

Bug: 1156270
Change-Id: I1b8c30bbb506c360a0206a31bbebea0286123d1e
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2618491Reviewed-by: Xiyuan Xia <xiyuan@chromium.org>
Commit-Queue: Ana Salazar <anasalazar@chromium.org>
Cr-Commit-Position: refs/heads/master@{#841605}

ash/public/cpp/views_text_services_context_menu_impl.cc

@@ -93,6 +93,9 @@ void ViewsTextServicesContextMenuImpl::AddClipboardHistoryMenuOption(
   const int target_index = index_of_paste + 1;
   menu->InsertItemAt(target_index, IDS_APP_SHOW_CLIPBOARD_HISTORY,
                      l10n_util::GetStringUTF16(IDS_APP_SHOW_CLIPBOARD_HISTORY));
+  menu->SetIsNewFeatureAt(
+      target_index,
+      chromeos::features::IsClipboardHistoryContextMenuNudgeEnabled());
 }
 
 }  // namespace ash