[Offline Pages] Snapshotting on timeout of last retry.

components/offline_pages/core/background/offliner_stub.cc

Index: components/offline_pages/core/background/offliner_stub.cc
diff --git a/components/offline_pages/core/background/offliner_stub.cc b/components/offline_pages/core/background/offliner_stub.cc
index 0455fe08d7155575ba2d3d8eb96aa38c41658371..3b3c1f56164da0ca94ff8a3f7633e756edf5b49b 100644
--- a/components/offline_pages/core/background/offliner_stub.cc
+++ b/components/offline_pages/core/background/offliner_stub.cc
@@ -11,7 +11,10 @@
 namespace offline_pages {
 
 OfflinerStub::OfflinerStub()
-    : disable_loading_(false), enable_callback_(false), cancel_called_(false) {}
+    : disable_loading_(false),
+      enable_callback_(false),
+      cancel_called_(false),
+      snapshot_on_last_retry_(false) {}
 
 OfflinerStub::~OfflinerStub() {}
 
@@ -35,4 +38,14 @@ void OfflinerStub::Cancel() {
   cancel_called_ = true;
 }
 
+bool OfflinerStub::HandleTimeout(const SavePageRequest& request) {
+  if (snapshot_on_last_retry_) {
+    base::ThreadTaskRunnerHandle::Get()->PostTask(
+        FROM_HERE,
+        base::Bind(callback_, request, Offliner::RequestStatus::SAVED));
+    return true;
+  }
+  return false;
+}
+
 }  // namespace offline_pages