Add an API to Pause and Resume background offlining requests.

components/offline_pages/background/request_queue.cc

Index: components/offline_pages/background/request_queue.cc
diff --git a/components/offline_pages/background/request_queue.cc b/components/offline_pages/background/request_queue.cc
index fd4cc54a982b8047e3dad86a2683605782148880..373b7efbc39e4ddb4f1b71bdd7eb01d47a263bd7 100644
--- a/components/offline_pages/background/request_queue.cc
+++ b/components/offline_pages/background/request_queue.cc
@@ -142,6 +142,21 @@ void RequestQueue::RemoveRequestsByClientId(
                                    base::Bind(RemoveRequestDone, callback));
 }
 
+void RequestQueue::PauseRequests(
+    const std::vector<int64_t>& request_ids,
+    const UpdateRequestCallback& callback) {
+  store_->PauseRequests(request_ids,
+                        base::Bind(UpdateRequestDone, callback));
+}
+
+void RequestQueue::ResumeRequests(
+    const std::vector<int64_t>& request_ids,
+    const UpdateRequestCallback& callback) {
+  store_->ResumeRequests(request_ids,
+                         base::Bind(UpdateRequestDone, callback));
+}
+
+
 void RequestQueue::PurgeRequests(const PurgeRequestsCallback& callback) {}
 
 }  // namespace offline_pages