Added HttpUtils::HasValidators and HttpResponse::HasValidators

components/precache/core/precache_fetcher.cc

Index: components/precache/core/precache_fetcher.cc
diff --git a/components/precache/core/precache_fetcher.cc b/components/precache/core/precache_fetcher.cc
index 5aac067433fb0fc057e76d7f3bcec1679bf7d82d..fc52258ae5b64a86043390d8c402184c2d6c5983 100644
--- a/components/precache/core/precache_fetcher.cc
+++ b/components/precache/core/precache_fetcher.cc
@@ -191,7 +191,7 @@ void PrecacheFetcher::Fetcher::OnURLFetchComplete(const URLFetcher* source) {
   if (fetch_stage_ == FetchStage::CACHE &&
       (source->GetStatus().error() == net::ERR_CACHE_MISS ||
        (source->GetResponseHeaders() &&
-        source->GetResponseHeaders()->HasStrongValidators()))) {
+        source->GetResponseHeaders()->HasValidators()))) {
     // If the resource was not found in the cache, request it from the
     // network.
     //