[Offline Pages] Snapshotting on timeout of last retry.

chrome/browser/android/offline_pages/prerendering_offliner.cc

Index: chrome/browser/android/offline_pages/prerendering_offliner.cc
diff --git a/chrome/browser/android/offline_pages/prerendering_offliner.cc b/chrome/browser/android/offline_pages/prerendering_offliner.cc
index 28fd7a993a7866372f981e0f464d48f7af4f5a31..7162939d8aa7c953c98f0ee872f3484715920e7f 100644
--- a/chrome/browser/android/offline_pages/prerendering_offliner.cc
+++ b/chrome/browser/android/offline_pages/prerendering_offliner.cc
@@ -12,6 +12,7 @@
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/common/pref_names.h"
 #include "components/content_settings/core/common/pref_names.h"
+#include "components/offline_pages/core/background/offliner_policy.h"
 #include "components/offline_pages/core/background/save_page_request.h"
 #include "components/offline_pages/core/client_namespace_constants.h"
 #include "components/offline_pages/core/offline_page_model.h"
@@ -49,6 +50,7 @@ PrerenderingOffliner::PrerenderingOffliner(
     const OfflinerPolicy* policy,
     OfflinePageModel* offline_page_model)
     : browser_context_(browser_context),
+      policy_(policy),
       offline_page_model_(offline_page_model),
       pending_request_(nullptr),
       is_low_end_device_(base::SysInfo::IsLowEndDevice()),
@@ -225,6 +227,20 @@ void PrerenderingOffliner::Cancel() {
   }
 }
 
+bool PrerenderingOffliner::HandleTimeout(const SavePageRequest& request) {
+  if (pending_request_) {
+    DCHECK(request.request_id() == pending_request_->request_id());
+    if (GetOrCreateLoader()->IsLowbarMet() &&
+        (request.started_attempt_count() + 1 >= policy_->GetMaxStartedTries() ||
+         request.completed_attempt_count() + 1 >=
+             policy_->GetMaxCompletedTries())) {
+      GetOrCreateLoader()->StartSnapshot();
+      return true;
+    }
+  }
+  return false;
+}
+
 void PrerenderingOffliner::SetLoaderForTesting(
     std::unique_ptr<PrerenderingLoader> loader) {
   DCHECK(!loader_);