[HttpCache] LOAD_ONLY_FROM_CACHE should not imply LOAD_PREFERRING_CACHE

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 8f45bff3136821d26dcf92c8a563c76179d90e90..5f3df15c52f28e86092fdc350ca1331ab9e3c5b6 100644
--- a/components/precache/core/precache_fetcher.cc
+++ b/components/precache/core/precache_fetcher.cc
@@ -260,7 +260,9 @@ void PrecacheFetcher::Fetcher::LoadFromCache() {
       cache_url_fetcher_.get(),
       data_use_measurement::DataUseUserData::PRECACHE);
   cache_url_fetcher_->SetRequestContext(request_context_);
-  cache_url_fetcher_->SetLoadFlags(net::LOAD_ONLY_FROM_CACHE | kNoTracking);
+  cache_url_fetcher_->SetLoadFlags(net::LOAD_ONLY_FROM_CACHE |
+                                   net::LOAD_SKIP_CACHE_VALIDATION |
+                                   kNoTracking);
   std::unique_ptr<URLFetcherNullWriter> null_writer(new URLFetcherNullWriter);
   cache_url_fetcher_->SaveResponseWithWriter(std::move(null_writer));
   cache_url_fetcher_->Start();