Replace deprecated base::NonThreadSafe in chrome/browser/prerender in favor of SequenceChecker.

chrome/browser/prerender/prerender_history.cc

 // Copyright (c) 2011 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/prerender/prerender_history.h"
 
 #include <memory>
 #include <utility>
 
 #include "base/logging.h"
 #include "base/memory/ptr_util.h"
 #include "base/strings/string_number_conversions.h"
 #include "base/values.h"
 
 namespace prerender {
 
 PrerenderHistory::PrerenderHistory(size_t max_items)
     : max_items_(max_items) {
   DCHECK(max_items > 0);
 }
 
 PrerenderHistory::~PrerenderHistory() {
+  DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
 }
 
 void PrerenderHistory::AddEntry(const Entry& entry) {
-  DCHECK(CalledOnValidThread());
+  DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
   while (entries_.size() >= max_items_)
     entries_.pop_front();
   entries_.push_back(entry);
 }
 
 void PrerenderHistory::Clear() {
   entries_.clear();
 }
 
 std::unique_ptr<base::Value> PrerenderHistory::CopyEntriesAsValue() const {
@@ skipping 13 matching lines @@
     // integers.
     entry_dict->SetString(
         "end_time",
         base::Int64ToString((entry.end_time - epoch_start).InMilliseconds()));
     return_list->Append(std::move(entry_dict));
   }
   return std::move(return_list);
 }
 
 }  // namespace prerender