[HttpCache] LOAD_ONLY_FROM_CACHE should not imply LOAD_PREFERRING_CACHE

net/base/load_flags_list.h

 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // This is the list of load flags and their values. For the enum values,
 // include the file "net/base/load_flags.h".
 //
 // Here we define the values using a macro LOAD_FLAG, so it can be
 // expanded differently in some places (for example, to automatically
 // map a load flag value to its symbolic name).
 
 LOAD_FLAG(NORMAL, 0)
 
 // This is "normal reload", meaning an if-none-match/if-modified-since query
 LOAD_FLAG(VALIDATE_CACHE, 1 << 0)
 
 // This is "shift-reload", meaning a "pragma: no-cache" end-to-end fetch
 LOAD_FLAG(BYPASS_CACHE, 1 << 1)
 
 // This is a back/forward style navigation where the cached content should
 // be preferred over any protocol specific cache validation.
-LOAD_FLAG(PREFERRING_CACHE, 1 << 2)
+LOAD_FLAG(SKIP_CACHE_VALIDATION, 1 << 2)
 
 // This is a navigation that will fail if it cannot serve the requested
 // resource from the cache (or some equivalent local store).
 LOAD_FLAG(ONLY_FROM_CACHE, 1 << 3)
 
 // This is a navigation that will not use the cache at all.  It does not
 // impact the HTTP request headers.
 LOAD_FLAG(DISABLE_CACHE, 1 << 4)
 
 // If present, causes certificate revocation checks to be skipped on secure
@@ skipping 48 matching lines @@
 LOAD_FLAG(DO_NOT_USE_EMBEDDED_IDENTITY, 1 << 16)
 
 // The creator of this URLRequest wishes to receive stale responses when allowed
 // by the "Cache-Control: stale-while-revalidate" directive and is able to issue
 // an async revalidation to update the cache.
 LOAD_FLAG(SUPPORT_ASYNC_REVALIDATION, 1 << 17)
 
 // Indicates that this request is not to be migrated to a new network when QUIC
 // connection migration is enabled.
 LOAD_FLAG(DISABLE_CONNECTION_MIGRATION, 1 << 18)