Migrate SequencedTaskRunnerHandle calls to TaskRunnerHandle calls.

components/safe_json/safe_json_parser_impl.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 "components/safe_json/safe_json_parser_impl.h"
 
 #include <utility>
 
 #include "base/sequenced_task_runner.h"
 #include "base/strings/utf_string_conversions.h"
-#include "base/threading/sequenced_task_runner_handle.h"
-#include "base/threading/thread_task_runner_handle.h"
+#include "base/threading/task_runner_handle.h"
 #include "base/tuple.h"
 #include "base/values.h"
 #include "content/public/browser/browser_thread.h"
 #include "content/public/browser/utility_process_host.h"
 #include "content/public/common/service_registry.h"
 #include "grit/components_strings.h"
 #include "ui/base/l10n/l10n_util.h"
 
 using content::BrowserThread;
 using content::UtilityProcessHost;
@@ skipping 81 matching lines @@
     const base::Value* value = NULL;
     CHECK(wrapper.Get(0, &value));
     parsed_json_.reset(value->DeepCopy());
   } else {
     error_ = error.get();
   }
   ReportResults();
 }
 
 void SafeJsonParserImpl::Start() {
-  caller_task_runner_ = base::SequencedTaskRunnerHandle::Get();
+  caller_task_runner_ = base::TaskRunnerHandle::Get();
 
   BrowserThread::PostTask(
       BrowserThread::IO, FROM_HERE,
       base::Bind(&SafeJsonParserImpl::StartWorkOnIOThread, this));
 }
 
 }  // namespace safe_json