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

content/browser/service_worker/service_worker_job_coordinator.cc

Index: content/browser/service_worker/service_worker_job_coordinator.cc
diff --git a/content/browser/service_worker/service_worker_job_coordinator.cc b/content/browser/service_worker/service_worker_job_coordinator.cc
index f2b54389d1175e19292c0a9ed8ef78fad7ddf458..6da772c54efae2411676d3bfbc8721754c03da05 100644
--- a/content/browser/service_worker/service_worker_job_coordinator.cc
+++ b/content/browser/service_worker/service_worker_job_coordinator.cc
@@ -41,6 +41,14 @@ void ServiceWorkerJobCoordinator::JobQueue::Pop(
     jobs_.front()->Start();
 }
 
+void ServiceWorkerJobCoordinator::JobQueue::AbortAll() {
+  for (std::deque<ServiceWorkerRegisterJobBase*>::iterator it = jobs_.begin();
+       it != jobs_.end(); ++it) {
+    (*it)->Abort();
+  }
+  STLDeleteElements(&jobs_);
+}
+
 void ServiceWorkerJobCoordinator::JobQueue::ClearForShutdown() {
   STLDeleteElements(&jobs_);
 }
@@ -84,6 +92,14 @@ void ServiceWorkerJobCoordinator::Unregister(
   queued_job->AddCallback(callback);
 }
 
+void ServiceWorkerJobCoordinator::AbortAll() {
+  for (RegistrationJobMap::iterator it = jobs_.begin();
+       it != jobs_.end(); ++it) {
+    it->second.AbortAll();
+  }
+  jobs_.clear();
+}
+
 void ServiceWorkerJobCoordinator::FinishJob(const GURL& pattern,
                                             ServiceWorkerRegisterJobBase* job) {
   RegistrationJobMap::iterator pending_jobs = jobs_.find(pattern);