//rlz: Convert base::(U)Int(64)ToString(16) to NumberToString(16)

The former non-overloaded variants are deprecated.

This is a mechanical change; there is no intended behavior change.

Bug: 929827
Change-Id: I183ad53789b6b179b0f8979a329c59c9db8fca8f
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1461039Reviewed-by: Roger Tawa <rogerta@chromium.org>
Commit-Queue: Raul Tambre <raul@tambre.ee>
Cr-Commit-Position: refs/heads/master@{#645303}

rlz/chromeos/lib/rlz_value_store_chromeos.cc

@@ -137,7 +137,7 @@ bool RlzValueStoreChromeOS::HasAccess(AccessType type) {
 bool RlzValueStoreChromeOS::WritePingTime(Product product, int64_t time) {
   DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
   rlz_store_->SetString(GetKeyName(kPingTimeKey, product),
-                        base::Int64ToString(time));
+                        base::NumberToString(time));
   return true;
 }