Allow automatic use of stale cache entries if site is unreachable.

content/browser/loader/resource_dispatcher_host_impl.cc

 // Copyright (c) 2012 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.
 
 // See http://dev.chromium.org/developers/design-documents/multi-process-resource-loading
 
 #include "content/browser/loader/resource_dispatcher_host_impl.h"
 
 #include <set>
 #include <vector>
@@ skipping 293 matching lines @@
     load_flags |= net::LOAD_IGNORE_LIMITS;
 
   ChildProcessSecurityPolicyImpl* policy =
       ChildProcessSecurityPolicyImpl::GetInstance();
   if (!policy->CanSendCookiesForOrigin(child_id, request_data.url)) {
     load_flags |= (net::LOAD_DO_NOT_SEND_COOKIES |
                    net::LOAD_DO_NOT_SEND_AUTH_DATA |
                    net::LOAD_DO_NOT_SAVE_COOKIES);
   }
 
+  if (CommandLine::ForCurrentProcess()->HasSwitch(
+          switches::kEnableOfflineCacheAccess)) {
+    load_flags |= net::LOAD_CACHE_RETURN_IF_OFFLINE;
+  }
+
   // Raw headers are sensitive, as they include Cookie/Set-Cookie, so only
   // allow requesting them if requester has ReadRawCookies permission.
   if ((load_flags & net::LOAD_REPORT_RAW_HEADERS)
       && !policy->CanReadRawCookies(child_id)) {
     VLOG(1) << "Denied unauthorized request for raw headers";
     load_flags &= ~net::LOAD_REPORT_RAW_HEADERS;
   }
 
   return load_flags;
 }
@@ skipping 1408 matching lines @@
 
   return i->second.get();
 }
 
 ResourceLoader* ResourceDispatcherHostImpl::GetLoader(int child_id,
                                                       int request_id) const {
   return GetLoader(GlobalRequestID(child_id, request_id));
 }
 
 }  // namespace content