[Offline pages] Adding AddRequestTask to Request Queue

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 d25a72f3f30312a983022c812f5376850d9c321b..4ec928d08a27153dca19972ca4f7b02a35baac49 100644
--- a/components/offline_pages/background/request_queue.cc
+++ b/components/offline_pages/background/request_queue.cc
@@ -9,6 +9,7 @@
 #include "base/bind.h"
 #include "base/location.h"
 #include "base/threading/thread_task_runner_handle.h"
+#include "components/offline_pages/background/add_request_task.h"
 #include "components/offline_pages/background/change_requests_state_task.h"
 #include "components/offline_pages/background/mark_attempt_aborted_task.h"
 #include "components/offline_pages/background/mark_attempt_completed_task.h"
@@ -73,7 +74,9 @@ void RequestQueue::AddRequest(const SavePageRequest& request,
                               const AddRequestCallback& callback) {
   // TODO(fgorski): check that request makes sense.
   // TODO(fgorski): check that request does not violate policy.
-  store_->AddRequest(request, base::Bind(&AddRequestDone, callback, request));
+  std::unique_ptr<AddRequestTask> task(new AddRequestTask(
+      store_.get(), request, base::Bind(&AddRequestDone, callback, request)));
+  task_queue_.AddTask(std::move(task));
 }
 
 void RequestQueue::RemoveRequests(const std::vector<int64_t>& request_ids,