Always reschedule after resuming.

BUG=610521

Review-Url: https://codereview.chromium.org/2277663003
Cr-Commit-Position: refs/heads/master@{#414258}

components/offline_pages/background/request_coordinator.cc

@@ -180,7 +180,7 @@ void RequestCoordinator::ResumeRequests(
       request_ids, SavePageRequest::RequestState::AVAILABLE,
       base::Bind(&RequestCoordinator::UpdateMultipleRequestsCallback,
                  weak_ptr_factory_.GetWeakPtr()));
-  // TODO: Should we also schedule a task, in case there is not one scheduled?
+  scheduler_->Schedule(GetTriggerConditionsForUserRequest());
 }
 
 void RequestCoordinator::AddRequestResultCallback(