Making offline previews freshness configurable

chrome/browser/android/offline_pages/offline_page_request_job.cc

Index: chrome/browser/android/offline_pages/offline_page_request_job.cc
diff --git a/chrome/browser/android/offline_pages/offline_page_request_job.cc b/chrome/browser/android/offline_pages/offline_page_request_job.cc
index fdc99500f4eb37f59bd1f1a2b43cc520a5fd3e1a..c9b50f5010bc3cbdabe032b0ba8f17c76f61bd23 100644
--- a/chrome/browser/android/offline_pages/offline_page_request_job.cc
+++ b/chrome/browser/android/offline_pages/offline_page_request_job.cc
@@ -312,10 +312,9 @@ RequestResult AccessOfflineFile(
 
   // If the page is being loaded on a slow network, only use the offline page
   // if it was created within the past day.
-  // TODO(romax): Make the constant be policy driven.
   if (network_state == NetworkState::PROHIBITIVELY_SLOW_NETWORK &&
       base::Time::Now() - offline_page->creation_time >
-          base::TimeDelta::FromDays(1)) {
+          previews::params::OfflinePreviewFreshnessDuration()) {
     return RequestResult::PAGE_NOT_FRESH;
   }