ServiceWorker: Add a function to abort all pending jobs in SWJobCoordinator

content/browser/service_worker/service_worker_register_job.cc

Index: content/browser/service_worker/service_worker_register_job.cc
diff --git a/content/browser/service_worker/service_worker_register_job.cc b/content/browser/service_worker/service_worker_register_job.cc
index 6eba2e8ab82a714235f7a0b97f6822f8e3f089cd..153b80eadd62bd8e81c512847ef6da4b4dc4f908 100644
--- a/content/browser/service_worker/service_worker_register_job.cc
+++ b/content/browser/service_worker/service_worker_register_job.cc
@@ -38,7 +38,8 @@ ServiceWorkerRegisterJob::ServiceWorkerRegisterJob(
       weak_factory_(this) {}
 
 ServiceWorkerRegisterJob::~ServiceWorkerRegisterJob() {
-  DCHECK(!context_ || phase_ == INITIAL || phase_ == COMPLETE)
+  DCHECK(!context_ ||
+         phase_ == INITIAL || phase_ == COMPLETE || phase_ == ABORT)
       << "Jobs should only be interrupted during shutdown.";
 }
 
@@ -64,6 +65,11 @@ void ServiceWorkerRegisterJob::Start() {
           weak_factory_.GetWeakPtr()));
 }
 
+void ServiceWorkerRegisterJob::Abort() {
+  SetPhase(ABORT);
+  Complete(SERVICE_WORKER_ERROR_ABORT);
+}
+
 bool ServiceWorkerRegisterJob::Equals(ServiceWorkerRegisterJobBase* job) {
   if (job->GetType() != GetType())
     return false;
@@ -131,6 +137,8 @@ void ServiceWorkerRegisterJob::SetPhase(Phase phase) {
     case COMPLETE:
       DCHECK(phase_ != INITIAL && phase_ != COMPLETE) << phase_;
       break;
+    case ABORT:
+      break;
   }
   phase_ = phase;
 }
@@ -359,7 +367,8 @@ void ServiceWorkerRegisterJob::OnActivateFinished(
 }
 
 void ServiceWorkerRegisterJob::Complete(ServiceWorkerStatusCode status) {
-  SetPhase(COMPLETE);
+  if (phase_ != ABORT)
+    SetPhase(COMPLETE);
   if (status != SERVICE_WORKER_OK) {
     if (registration() && registration()->waiting_version()) {
       DisassociateWaitingVersionFromDocuments(
@@ -380,7 +389,9 @@ void ServiceWorkerRegisterJob::Complete(ServiceWorkerStatusCode status) {
     context_->storage()->NotifyDoneInstallingRegistration(
         registration(), pending_version(), status);
   }
-  context_->job_coordinator()->FinishJob(pattern_, this);
+  // The caller of Abort() takes care of removing the jobs from the queue.
+  if (phase_ != ABORT)
+    context_->job_coordinator()->FinishJob(pattern_, this);
 }
 
 void ServiceWorkerRegisterJob::ResolvePromise(