Add more features to ntp-tiles-internal

ios/chrome/browser/ui/webui/popular_sites_internals_ui.cc

 // Copyright 2016 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 "ios/chrome/browser/ui/webui/popular_sites_internals_ui.h"
 
 #include "base/memory/ptr_util.h"
 #include "components/grit/components_resources.h"
 #include "components/ntp_tiles/popular_sites.h"
 #include "components/ntp_tiles/webui/popular_sites_internals_message_handler.h"
@@ skipping 13 matching lines @@
     : public web::WebUIIOSMessageHandler,
       public ntp_tiles::PopularSitesInternalsMessageHandlerClient {
  public:
   IOSPopularSitesInternalsMessageHandlerBridge() : handler_(this) {}
 
  private:
   // web::WebUIIOSMessageHandler:
   void RegisterMessages() override;
 
   // ntp_tiles::PopularSitesInternalsMessageHandlerClient
-  base::SequencedWorkerPool* GetBlockingPool() override;
   std::unique_ptr<ntp_tiles::PopularSites> MakePopularSites() override;
   PrefService* GetPrefs() override;
   void RegisterMessageCallback(
       const std::string& message,
       const base::Callback<void(const base::ListValue*)>& callback) override;
   void CallJavascriptFunctionVector(
       const std::string& name,
       const std::vector<const base::Value*>& values) override;
 
   ntp_tiles::PopularSitesInternalsMessageHandler handler_;
 
   DISALLOW_COPY_AND_ASSIGN(IOSPopularSitesInternalsMessageHandlerBridge);
 };
 
 void IOSPopularSitesInternalsMessageHandlerBridge::RegisterMessages() {
   handler_.RegisterMessages();
 }
 
-base::SequencedWorkerPool*
-IOSPopularSitesInternalsMessageHandlerBridge::GetBlockingPool() {
-  return web::WebThread::GetBlockingPool();
-}
-
 std::unique_ptr<ntp_tiles::PopularSites>
 IOSPopularSitesInternalsMessageHandlerBridge::MakePopularSites() {
   return IOSPopularSitesFactory::NewForBrowserState(
       ios::ChromeBrowserState::FromWebUIIOS(web_ui()));
 }
 
 PrefService* IOSPopularSitesInternalsMessageHandlerBridge::GetPrefs() {
   return ios::ChromeBrowserState::FromWebUIIOS(web_ui())->GetPrefs();
 }
 
@@ skipping 25 matching lines @@
 
 PopularSitesInternalsUI::PopularSitesInternalsUI(web::WebUIIOS* web_ui)
     : web::WebUIIOSController(web_ui) {
   web::WebUIIOSDataSource::Add(ios::ChromeBrowserState::FromWebUIIOS(web_ui),
                                CreatePopularSitesInternalsHTMLSource());
   web_ui->AddMessageHandler(
       base::MakeUnique<IOSPopularSitesInternalsMessageHandlerBridge>());
 }
 
 PopularSitesInternalsUI::~PopularSitesInternalsUI() {}