Implements an UpdateClient::SendUninstallPing API for the

chrome/browser/ui/webui/components_ui.cc

 // 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/browser/ui/webui/components_ui.h"
 
 #include <stddef.h>
 
 #include <algorithm>
 #include <string>
@@ skipping 219 matching lines @@
     case update_client::CrxUpdateItem::State::kUpdating:
       return l10n_util::GetStringUTF16(IDS_COMPONENTS_SVC_STATUS_UPDATING);
     case update_client::CrxUpdateItem::State::kDownloaded:
       return l10n_util::GetStringUTF16(IDS_COMPONENTS_SVC_STATUS_DOWNLOADED);
     case update_client::CrxUpdateItem::State::kUpdated:
       return l10n_util::GetStringUTF16(IDS_COMPONENTS_SVC_STATUS_UPDATED);
     case update_client::CrxUpdateItem::State::kUpToDate:
       return l10n_util::GetStringUTF16(IDS_COMPONENTS_SVC_STATUS_UPTODATE);
     case update_client::CrxUpdateItem::State::kNoUpdate:
       return l10n_util::GetStringUTF16(IDS_COMPONENTS_SVC_STATUS_NOUPDATE);
+    case update_client::CrxUpdateItem::State::kUninstalled:  // Fall through.
     case update_client::CrxUpdateItem::State::kLastStatus:
       return l10n_util::GetStringUTF16(IDS_COMPONENTS_UNKNOWN);
   }
   return l10n_util::GetStringUTF16(IDS_COMPONENTS_UNKNOWN);
 }
 
 void ComponentsUI::OnEvent(Events event, const std::string& id) {
   base::DictionaryValue parameters;
   parameters.SetString("event", ComponentEventToString(event));
   if (!id.empty()) {
     if (event == Events::COMPONENT_UPDATED) {
       auto cus = g_browser_process->component_updater();
       update_client::CrxUpdateItem item;
       if (cus->GetComponentDetails(id, &item))
         parameters.SetString("version", item.component.version.GetString());
     }
     parameters.SetString("id", id);
   }
   web_ui()->CallJavascriptFunction("onComponentEvent", parameters);
 }