Apply Delayed Code Review Comments to Task Scheduler Internals

chrome/browser/ui/webui/task_scheduler_internals/task_scheduler_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 "chrome/browser/ui/webui/task_scheduler_internals/task_scheduler_internals_ui.h"
 
 #include <utility>
 
 #include "base/bind.h"
 #include "base/memory/ptr_util.h"
@@ skipping 64 matching lines @@
         std::unique_ptr<base::DictionaryValue> buckets =
             base::MakeUnique<base::DictionaryValue>();
         buckets->SetString("name", histogram->histogram_name());
         buckets->Set("buckets", SnapshotHistogramToValue(histogram));
         histogram_value->Append(std::move(buckets));
       }
 
       data.Set("histograms", std::move(histogram_value));
     }
 
-    web_ui()->CallJavascriptFunctionUnsafe(
+    AllowJavascript();
+    CallJavascriptFunction(
         "TaskSchedulerInternals.onGetTaskSchedulerData", data);
   }
 
   DISALLOW_COPY_AND_ASSIGN(TaskSchedulerDataHandler);
 };
 
 }  // namespace
 
 TaskSchedulerInternalsUI::TaskSchedulerInternalsUI(content::WebUI* web_ui)
     : content::WebUIController(web_ui) {
   web_ui->AddMessageHandler(new TaskSchedulerDataHandler());
 
   content::WebUIDataSource* html_source =
       content::WebUIDataSource::Create(
           chrome::kChromeUITaskSchedulerInternalsHost);
   html_source->AddResourcePath(
       "index.css", IDR_TASK_SCHEDULER_INTERNALS_RESOURCES_INDEX_CSS);
   html_source->AddResourcePath(
       "index.js", IDR_TASK_SCHEDULER_INTERNALS_RESOURCES_INDEX_JS);
   html_source->SetDefaultResource(
       IDR_TASK_SCHEDULER_INTERNALS_RESOURCES_INDEX_HTML);
 
   content::WebUIDataSource::Add(Profile::FromWebUI(web_ui), html_source);
 }
 
 TaskSchedulerInternalsUI::~TaskSchedulerInternalsUI() = default;