Add basic browser test for EmbeddedWorker/ServiceWorker

content/browser/service_worker/embedded_worker_instance.cc

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "content/browser/service_worker/embedded_worker_instance.h"
 
 #include "content/browser/service_worker/embedded_worker_registry.h"
 #include "content/common/service_worker/embedded_worker_messages.h"
 #include "url/gurl.h"
 
@@ skipping 67 matching lines @@
       thread_id_(-1) {
 }
 
 void EmbeddedWorkerInstance::OnStarted(int thread_id) {
   // Stop is requested before OnStarted is sent back from the worker.
   if (status_ == STOPPING)
     return;
   DCHECK(status_ == STARTING);
   status_ = RUNNING;
   thread_id_ = thread_id;
+  FOR_EACH_OBSERVER(Observer, observer_list_, OnStarted());
 }
 
 void EmbeddedWorkerInstance::OnStopped() {
   status_ = STOPPED;
   process_id_ = -1;
   thread_id_ = -1;
+  FOR_EACH_OBSERVER(Observer, observer_list_, OnStopped());
+}
+
+void EmbeddedWorkerInstance::AddObserver(Observer* observer) {
+  observer_list_.AddObserver(observer);
+}
+
+void EmbeddedWorkerInstance::RemoveObserver(Observer* observer) {
+  observer_list_.RemoveObserver(observer);
 }
 
 bool EmbeddedWorkerInstance::ChooseProcess() {
   DCHECK_EQ(-1, process_id_);
   // Naive implementation; chooses a process which has the biggest number of
   // associated providers (so that hopefully likely live longer).
   ProcessRefMap::iterator max_ref_iter = process_refs_.end();
   for (ProcessRefMap::iterator iter = process_refs_.begin();
        iter != process_refs_.end(); ++iter) {
     if (max_ref_iter == process_refs_.end() ||
         max_ref_iter->second < iter->second)
       max_ref_iter = iter;
   }
   if (max_ref_iter == process_refs_.end())
     return false;
   process_id_ = max_ref_iter->first;
   return true;
 }
 
 }  // namespace content