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

chrome/service/cloud_print/cloud_print_token_store.cc

Index: chrome/service/cloud_print/cloud_print_token_store.cc
diff --git a/chrome/service/cloud_print/cloud_print_token_store.cc b/chrome/service/cloud_print/cloud_print_token_store.cc
index dd34e4f52498916fd4dd5580e8a416ad3e62b7cf..84006eed246fdb07552a747da07953d2d671ea89 100644
--- a/chrome/service/cloud_print/cloud_print_token_store.cc
+++ b/chrome/service/cloud_print/cloud_print_token_store.cc
@@ -24,11 +24,12 @@ CloudPrintTokenStore::CloudPrintTokenStore() {
 }
 
 CloudPrintTokenStore::~CloudPrintTokenStore() {
+  DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
   lazy_tls.Pointer()->Set(NULL);
 }
 
 void CloudPrintTokenStore::SetToken(const std::string& token) {
-  DCHECK(CalledOnValidThread());
+  DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
   token_ = token;
 }