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

chrome/browser/prerender/prerender_history.cc

Index: chrome/browser/prerender/prerender_history.cc
diff --git a/chrome/browser/prerender/prerender_history.cc b/chrome/browser/prerender/prerender_history.cc
index ce41a08f8a0060f8e032bfca09bb55ea2059a95d..5b7f0d5ca4b7c28c79c18041f3a10100030d7c48 100644
--- a/chrome/browser/prerender/prerender_history.cc
+++ b/chrome/browser/prerender/prerender_history.cc
@@ -20,10 +20,11 @@ PrerenderHistory::PrerenderHistory(size_t max_items)
 }
 
 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);